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#Pratchat35 Notes and Errata

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These are the show notes and errata for episode 35, “Great Balls of Physics“, featuring guest Anna Ahveninen, discussing Terry’s 1999 collaboration with Jack Cohen and Ian Stewart, The Science of Discworld.

  • The episode title plays on the classic Jerry Lee Lewis song, “Great Balls of Fire”, in honour of Roundworld’s tendency to shape matter into spheres.
  • Anna (and Liz and Ben) know that pharmacists do not just “sell molecules”. Modern pharmacy is the science of understanding and preparing medicines. Pharmacists are highly trained healthcare professionals, rightly held in high regard. But in “Commonwealth English”, “chemist” is a common synonym for pharmacist, hence Anna’s joke and our hyperbolic extension of it. (While we’re on the subject, it’s not entirely true that “everything” is made of molecules, but certainly everything that humans are likely to sell on Earth is.)
  • The story of the science fiction convention, which was held in the Hague in an unspecified year, appears in the book in Chapter 22, “Things That Aren’t”. Jack Cohen gave a longer account of Terry’s involvement, as well as some other background on how the book was written and published, in the Guardian article “Terry Pratchett and the real science of Discworld” by Sam Jordison, published a couple of months after Terry’s death.
  • A Teaspoon and an Open Mind: The Science of Doctor Who was written by Michael White in 2005, and if Ben were feeling uncharitable he might suggest it was rushed out to cash in- er, coincide with the hugely successful revived series that same year. White is an English author and former member of 80s band The Thompson Twins who now writes novels, but has also written a number of acclaimed biographies of da Vinci, Newton, Einstein, Tolkien, Asimov and many more. He also wrote The Science of The X-Files – which gets mentioned in the introduction of The Science of Discworld! The Doctor Who book’s title comes from the 1979 story The Creature From the Pit, in which the Doctor, having succeeded where another has failed, quips: “Well to be fair I had a couple of gadgets he probably didn’t, like a teaspoon and an open mind.” This line was almost certainly influenced by Douglas Adams, who was script editor of Doctor Who at the time. A Teaspoon and an Open Mind is also the title of the dedicated Doctor Who fan fiction site whofic.com.
  • Paul Davies is a famous English physicist and broadcaster who has written thirty books, most of them popular science titles which were bestsellers in the 1980s and 1990s. His most famous books are God and the New Physics (1983), The Mind of God (1992), and Ben’s favourite, How to Build a Time Machine (2002). Though less prolific in recent years, he did publish a new book in 2019: The Demon in the Machine.
  • Back to the Future Part II and Part III were filmed “back to back”, meaning that they were produced together, one immediately after the other. This allowed the two to make numerous references to each other and include many of the same actors.
  • In the 2007 Doctor Who story “Blink”, often cited as one of the best, the Tenth Doctor famously explains causality and time travel like this: “People assume that time is a strict progression of cause to effect, but, actually, from a non-linear, non-subjective viewpoint, it’s more like a big ball of wibbly-wobbly… timey-wimey… stuff.”
  • Jack Cohen was a zoologist with a long career in academia, and also advised science fiction authors how to write plausible aliens, including Anne McCaffrey, Harry Harrison, Larry Niven and Terry himself. He died in 2019. Ian Stewart is a mathematician who has written a large number of academic and popular mathematics books. Both worked at the University of Warwick, which granted Terry Pratchett his first honorary degree in 1999 following the publication of The Science of Discworld. (At the same ceremony, Terry made Jack and Ian honorary wizards of Unseen University.)
  • Orwell’s Revenge: The 1984 Palimpsest is a 1994 book by Peter Huber which tries to refute the dystopia of 1984, claiming that information technology will always be subverted for good because information wants to be free. Ben was skeptical when he first read it twenty-four years ago, and is no less skeptical now he’s discovered it was one of Mark Zuckerberg’s picks for his public book club in 2015.
  • Thaumaturgy comes from Greek, and means “miracle work” or “wonder work”. It is not only used to describe magic, but also the ability of some saints to perform miracles. In the roleplaying game Vampire: The Masquerade, the vampire clan Tremere are descended from a cabal of human mages who transformed themselves into vampires to achieve immortality, but lost their ability to use wizard magic. They developed a type of blood magic based on hermetic principles as a replacement, which they call thaumaturgy. (Ben’s pronunciation is correct.)
  • The Manhattan Project was the US Army’s effort to build nuclear weapons during World War II. As part of the project, the world’s first nuclear reactor, Chicago Pile-1, was built in an old squash court in Stagg Field, a football field and sports complex at the Hyde Park campus of the University of Chicago. It was completed on December 1, 1942, and the reaction started with removal of the control rods the next day.
  • Ben’s old saying about specialists is one that’s evolved a lot over time and likely has multiple origins, as so many of these things do. The earliest example seems to be from William Warde Fowler, a scholar at the University of Oxford, who used a shorter version of the phrase in a review published in 1911. The earliest version to add the bit about “knowing everything about nothing” also included the saying’s witty opposite, from Stanford University’s Robert E. Swain, appropriately enough a chemist, in 1928. He was talking about the difference between scientists and philosophers: “Some people regard the former as one who knows a great deal about a very little, and who keeps on knowing more and more about less and less until he knows everything about nothing. Then he is a scientist. Then there are the latter specimen, who knows a little about very much, and he continues to know less and less about more and more until he knows nothing about everything. Then he is a philosopher.”
  • A Brief History of Time: From the Big Bang to Black Holes is Stephen Hawking’s bestselling popular science book, first published in 1988. Special and general relativity are covered in chapter two, which might challenge a few readers, but chapter four – while less than twenty pages long – introduces mind-bending ideas from quantum mechanics like the “spin” of quarks. Because it sold 25 million copies but contains such difficult concepts, it is often called “the most unread book of all time”. (There’s no shame in this; have another go if you like!) In 2014, American mathematician Jordan Ellenberg used publicly available data on Amazon Kindle highlighting to judge which books were abandoned partway through, a measure he cheekily called the “Hawking Index”. A Brief History of Time appeared as the third or fourth in the list.
  • What Does a Martian Look Like? The Science of Extraterrestrial Life was originally published as Evolving the Alien: The Science of Extraterrestrial Life in 2002. Its central thesis is that if we want to find life elsewhere in the universe, we need to broaden our understanding of the forms life might take, as our current searches only look for life similar to that found on Earth. “Jack&Ian” appears in the preface as the name of their “collective entity”, though it should be noted that the book is largely based on Jack’s often given lecture “The Possibility of Life on Other Planets”, or POLOOP, which he had originally wanted to call “What Does a Martian Look Like?”
  • It is generally acceptable to reference your own work in science academia…though since the frequency with which a researcher’s work is cited is a mark of respectability and influence, there have been those who perhaps do so too often…
  • We’ve mentioned Arthur C Clarke, famous author of 2001: A Space Odyssey and many other influential science fiction novels before. Clarke’s most famous quote, “any sufficiently advanced technology is indistinguishable from magic“, was the last of his “three laws”, added to a revised version of his 1962 essay “Hazards of Prophecy: the Failure of the Imagination” in 1973. (The other two are much less famous.) The converse law quoted in the front of the book, “any technology distinguishable from magic is insufficiently advanced“, is attributed in the first edition of The Science of Discworld to Gregory Benford – but while a version of it does appear in Benford’s 1997 book Foundation’s Fear, the original appears to have been written by Professor Barry Gehm, published in the science fiction magazine Analog as “Gehm’s Corollary to Clarke’s Third Law” in 1991.
  • The story from The Simpsons in which Bart messes up Lisa’s science project, creating a miniature world full of tiny people in a bathtub, is the segment “The Genesis Tub” from the Halloween special “Treehouse of Horror VII” in 1996.
  • We previously referred to the universes hidden inside things in the first two Men in Black films in our Truckers episode, “Upscalator to Heaven“. In the first film, aliens play with a marble which somehow contains the Milky Way galaxy, while in the sequel, our entire universe is shown to exist within a locker in an alien train station.
  • A microcosm is any subset of a thing which is said to represent the whole. Ben’s wordplay “microcosmos” isn’t that clever, since the word comes via Latin from the Greek mikros kosmos, which literally means “tiny cosmos”.
  • Ben used out of old habit he is trying to break the older LGBT acronym, which is now considered incomplete. The longer version preferred these days is LGBTIAQ+, which encompasses lesbian, gay, bi, trans, intersex, asexual and/or agender, queer and more identities. The intent of the acronym is to represent the diversity of experience outside of “traditional” binary gender and heterosexuality. While not everyone likes it or identifies with the term, “queer” is commonly used as spoken shorthand for the acronym.
  • The first clear fossil evidence of dinosaur feathers was found in the 1990s, and palaeontologists have only found more since then.
  • The luminiferous æther – not to be confused with the class of organic compounds called ether – was a proposed “medium” of some kind of matter that filled space, and explained the transmission of light waves. In 1887, scientists Albert A. Michelson (who made some of the early precise measurements of the speed of light) and Edward W. Morley (famous for measuring the precise atomic weight of oxygen) conducted an experiment to detect the motion of the Earth through the æther. It failed, leading to the end of æther theory, and paving the way for others, including Einstein’s special relativity.
  • There are currently 118 chemical elements that have been identified. New elements are acknowledged by a Joint Working Party formed in 1999 by the International Union of Pure and Applied Chemistry (IUPAC) and the International Union of Pure and Applied Physics (IUPAP). It can take years between the first experimental discovery and formal acceptance of a new element, as initial claims are often disputed. The most recent four were acknowledged in 2015 and officially named in 2016, but were first synthesised years earlier. In order of their first recognised synthesis, they are:
    • Oganesson (Og, atomic number 118, named after Russian physicist Yuri Oganessian) in 2002;
    • Moscovium (Mc, atomic number 115, named after Moscow) in 2003;
    • Nihonium (Nh, atomic number 113; named after Japan, Nihon) in 2004; and
    • Tennessine (Ts, atomic number 117, named after the US state of Tennessee) in 2009.
  • Plumbum is the Latin name for lead, which is why its chemical symbol is Pb. (This also helps distinguish it from the five other elements with names that begin with L.)
  • The idea that science works by disproving things was popularised by philosopher Karl Popper as falsifiability or falsificationism. Popper claimed that science worked not by looking at evidence in the world and using that to formulate laws, but by formulating laws and then testing them against reality, trying to prove them false. As Liz says, this is a lie-to-children – or at least a step in the development of the philosophy of science.
  • Pluto’s status had been in question since 1992, when several other similarly-sized objects were discovered in the Kuiper belt. In 2005 a bigger object, Eris, was discovered, and so in 2006 the International Astronomical Union decided to formally define what a planet was. As a result they also created the classification of “dwarf planet”, which they applied to Eris, Pluto and several other Kuiper Belt Objects.
  • Winter in Game of Thrones, like Summer, lasts a long but variable time – sometimes many “years”. (How they even have “years” of standard length when the seasons are like this is unclear.) Despite fan attempts to devise solar system models that might explain this, George R R Martin – author of the A Song of Ice and Fire novels on which the show is based – is on record saying there is a non-scientific explanation for the seasons that will be revealed by the time he finishes writing the series.
  • The term “virtual reality” had become popular by the 1980s, and the first publicly available VR arcade games and consoles as early as the mid-90s, but the technology didn’t really take off while computer graphics were incapable of producing realistic looking worlds. Affordable VR headsets and kits became viable in 2010 with the invention of the Oculus Rift, and there are now several different commercially available VR systems, the most popular being Playstation VR, released in 2016 by Sony.
  • The Lawnmower Man is a 1992 film very much not based on the short story of the same title by Stephen King, who sued the production company to have his name removed from posters even though they did own the film rights to the story. In the film, Pierce Brosnan plays a scientist who uses experimental drugs and VR technology to improve the intelligence of Jobe, an intellectually disabled man who works mowing lawns. Jobe becomes malevolent and “uploads” himself into “cyberspace”. It’s…look, it’s very 1990s.
  • The Last of Us is a 2013 videogame for the Playstation 4 set in a dystopian future America where humans and many other animals have been taken over by a mutated version of the Cordyceps fungus. Cordyceps is a real genus, though the famous example which infects ants and alters their behaviour is now reclassified as Ophiocordyceps unilateralis. The fungus causes ants to climb to the underside of leaf and grab on tight, where it dies. The fungus replaces its body tissues and grows a fruiting body out of its head to spread its spores, and what’s more it’s been doing this to poor little ants for around 50 million years or more.
  • The Andalite Chronincles are better known as Animorphs, which we’ve previously talked about in #Pratchat19, “It Don’t Mean a Thing if it Ain’t Got Rocks In“. The Yeerks are small parasitic aliens, and mortal enemies of the animorphs, teenagers given shapeshifting powers in order to fight back against the Yeerk invasion.
  • Jack&Ian coined the term “extelligence” in their first book together, Figments of Reality: the Evolution of the Curious Mind in 1997. They define it in the introduction as “the accumulating knowledge of generations of intelligent beings” and consider it “a thing or process with its own characteristic structure and behaviour” requiring a new name. The book is largely devoted to exploring it. While it’s not as clear in The Science of Discworld, both Figments of Reality and What Does a Martian Look Like? explicitly include cultural knowledge like folklore and other non-written forms of knowledge as part of extelligence.
  • SimEarth was originally released in 1990, and was the second game in the “Sim” series following SimCity. (The third was SimAnt, in 1991.) It wasn’t just based on James Lovelock’s work; he directly advised on the game and wrote an introduction for the manual. As well as intelligent dinosaurs, it was possible to have machine life (assuming an advanced civilisation blew themselves up), intelligent carnivorous plants, and yes, a crustacean civilisation could totally be a thing.
  • The short story collection about women associated with the Nobel Prize is Ordinary Matter by Australian writer Laura Elvery, published in September 2020 by University of Queensland Press.
  • If you’re interested in a perspective on sexism in the Nobel Prize (along with other biases), this article on Massive Science is a good starting point.
  • While we’re used to thinking about Discworld wizards as men and witches as women, there are exceptions. Eskarina Smith, the Disc’s first woman wizard, appears in Pratchett’s third Discworld novel Equal Rites, which we covered in #Pratchat25, “Eskist Attitudes“. Watch out for more on that front in future episodes. (No spoilers for books we’ve not covered yet!)
  • Mileva Marić was a Serbian physicist and mathematician. Her career in academia was interrupted by her relationship with Albert Einstein, who was her lover, husband and the father of her children. While she is not credited as a co-author on any of his work, there is evidence to suggest she may have substantially assisted Einstein in his early work, including the papers for which he won the Nobel Prize.
  • There are plenty of podcast episodes about the forgotten women of science, but so far we’ve not found a whole show about this. Let us know if you find one! Meanwhile some good feminist science podcasts are Lady Science and Superwomen in Science, while great more general science shows hosted by women are Ologies with Alie Ward and Talk Nerdy with Cara Santa Maria.
  • For books on women in science, Anna recommends Women in Science by Rachel Ignotofsky, Inferior by Angela Saini and Invisible Women by Caroline Criado Perez. You can also check out the books on the STEMMinist book club list. (As usual, we recommend sourcing them from a local independent book shop, who can order in anything you want and needs your custom more than Amazon or BookDepository.)
  • William of Ockham (1287 – 1347) was a friar, philosopher and theologian whose most famous contribution to what would become scientific thought was the idea that “entities should not be multiplied without necessity” – i.e. that an explanation that involves fewer things is more likely correct. This is known as the law of parsimony, or more famously, Occam’s Razor – hence the beard gag. (It should be noted that William himself used the idea to defend the idea of miracles.)
  • In most versions of The Hitchhikers Guide to the Galaxy, Arthur Dent and Ford Prefect end up on a space ark full of middle managers and other people claimed by their society to be the “useless” third, sent to crash into prehistoric Earth. On Earth, Arthur tries to communicate with the original inhabitants, the not-cave-people (they don’t live in caves), by teaching them to play Scrabble with tiles he makes himself. It doesn’t work. The Primary Phase of the radio series, the second book The Restaurant at the End of the Universe, and the original television series all end with Arthur and Ford trying to determine the Ultimate Question of Life, the Universe and Everything by getting the not-cave-people to pull Scrabble letters out of a bag at random.
  • Ben thought about including all the cancelled space missions in these show notes, but decided to save that depressing list for the separate article he might write with updates on some of the science in the book.
  • Humans have rarely thought scientifically about the Flat Earth. It was clear to many ancient civilisations that the planet must be round, and the first written account of the spherical Earth was in about 250 BCE by Eratosthenes and other Greeks, using geometry to mathematically prove its shape and possibly accurately calculate its size. (Jack&Ian point out that the accuracy is based on modern estimates of the unit they used, the stadion, but they are maybe a little overly suspicious.)
  • Flatland: A Romance of Many Dimensions is a satirical 1884 novella by English schoolteacher Edwin A Abbott. As well as considering how two-dimensional beings might experience one- or three-dimensional worlds, it is also a fairly savage satire of the Victorian class system; the sexual politics of the book are either even more savage satire, or emblematic of the sexism of the time, depending on your interpretation. Ian Stewart not only wrote a sequel, Flatterland, in 2001, but an annotated version of the original, The Annotated Flatland, in 2002 (the same year as the updated The Science of Discworld and its sequel).
  • Mosasaurs are now well-known to the general public after appearing in a marine exhibit in the film Jurassic World, the 2015 sequel to the original three Jurassic Park films. Two different species of mosasaur were featured in the final episode of Impossible Pictures’ Sea Monsters, a 2003 follow up to 1999’s Walking with Dinosaurs.
  • Listener Bel described three categories of lies-to-children:
    • Protecting children e.g. “The world is a good and safe place”, stranger danger, “adults know what they’re doing”
    • Simplifications e.g. there are goodies and baddies and you can tell the difference by looking at them, “this is what an atom looks like”
    • Protecting adults, or “keeping the status quo”, e.g. sexism, racism, ableism, ageism and many more.
  • On being able to tell that a creature had hooves from its tooth, the specific instance Jack&Ian mention is of the Tingamarra tooth, which supposedly “demolished” the theory that placental mammals never made it to Australia. That call was a bit premature, since the claim is regarded at best as highly controversial and has not significantly changed the view of Australian palaeontology. It is still the consensus that the only placentals to arrive in Australia before humans were bats and rodents.
  • Temperance “Bones” Brennan is a fictional forensic anthropologist and protagonist of all twelve seasons of the television series Bones, which ran from 2005 to 2017. She’s played by Emily Deschanel. The television series is based on the Temperance Brennan series of novels by Kathy Reichs, which began with Déjà Dead in 1997 and, as of 2021, includes twenty novels and a short story collection. Ben is glad he missed this reference because while forensic anthropology is real – Reichs is one herself! – the show is pretty ridiculous. Bones has a hologram table! But it’s all good fun, and it gave David Boreanaz something to be cool and vulnerable in after Angel finished.
  • Teeth are great for palaeontologists because their enamel allows them to be preserved, and their shape and patterns of wear can be used to determine a great deal about diet and behaviour. Teeth are also very distinctive, and so you can tell a hooved animal’s tooth from that of an elephant or similar.
  • Liz’s joke about a creature with “don” in its name being really into “ham” is a reference to popular Australian ham, bacon and smallgoods brand Don. They are famous for their slogan “Is Don. Is good.”, coined for a series of ads in which a man spruiks their products in slightly broken, accented English before concluding with the phrase. (The same actor also plays the owner of a Gogomobil in another famous Australian ad from 1992 for the Yellow Pages phone directory. We have a lot of famous ads, probably because most of our television is otherwise sourced from the US or the UK; ad breaks were some of the rare times when you’d see Australian actors and sometimes hear Australian accents.)
  • To answer Liz’s questions: Are beak just giant tooth? No. Beak are is hair? …also no, but closer. Beaks are made of keratin, which is the same protein from which hair is formed. But there are two kinds of keratin: alpha-keratin is found in all vertebrates, and is used to form hair, wool and other softer but tough materials, like the outer layers of bony horns; and beta-keratin, found only in reptiles and birds, which is used to make scales, claws, feathers, shells and beaks.
  • Evolutionary electronics – also known as evolvable hardware – is totally a real thing, as is the circuit described in the book, evolved by Adrian Thompson at the University of Sussex in 1996. Though it hasn’t led to anything groundbreaking, the same principles can be used to make adaptive hardware that can alter itself in response to changes in the environment.
  • A blimp is an inflatable airship that doesn’t have any internal structure – basically a big shaped balloon held in shape by internal pressure. “Zeppelin” is the common name for rigid airships, in which the body is supported by an internal structure. Zeppelin was the name of the German aircraft manufacturer which built many of the most famous airships, including the Hindenburg. The company vanished for around fifty years following World War II, but was revived in 2001 and still operates today – including working with Goodyear to replace their older blimps with semi-rigid airships. These have a supporting keel along the base of the envelope that holds the lifting gas, but no other internal structure.

#Pratchat59 Notes and Errata

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These are the episode notes and errata for Pratchat episode 59, “Charlie and the Whale Factory“, discussing Pratchett’s 2005 collaboration with Ian Stewart and Jack Cohen, The Science of Discworld III: Darwin’s Watch.

Iconographic Evidence

Feast your eyes on this video of Kat’s extraordinary Pratchett shelf!

Notes and Errata

  • The episode title is of course inspired by Roald Dahl’s 1964 children’s novel Charlie and the Chocolate Factory, in which young Charlie Bucket manages to find a “golden ticket” admiring him to the magical factory of weird chocolatier Willy Wonka. We’re not entirely sure if Charlie Darwin would rather have encountered the oddities of Wonka’s factory, but he certainly didn’t seem to have enjoyed seeing the God of Evolution’s whale production line… The book was memorably filmed in 1971 as Willy Wonka and the Chocolate Factory, with Gene Wilder playing the part of Wonka, though Dahl did not like it. It was a modest success at the time, but became a cult classic in the 1980s when it was frequently broadcast on television. A 2005 adaptation using the same title as the book was directed by Tim Burton and starred Johnny Depp as Wonka, but the less said about that the better.
  • We discussed The Science of Discworld II: The Globe in #Pratchat47, “A Finite Number of Shakespeares“, with guest Alanta Colley. We felt afterwards we hadn’t adequately expressed all of our feelings about it, so we discussed it a bit more in episode seven of our bonus subscriber only podcast, Ook Club, released in October 2021.
  • We’ve previously mentioned Richard Dawkins in #Pratchat29 and #Pratchat47. His early books on evolution are good, and The Blind Watchmaker, published in 1986, makes a great companion piece to Darwin’s Watch. But in the early 2000s he became more and more focused on being anti-religion, and in 2006, a year after The Science of Discworld III, he published The God Delusion, which argued that any belief in a god was delusional. It became his best selling work. He has continued to attract controversy over the years, thanks to his large audience and his perceived position (until fairly recently) as a representative for atheists, whether they want him or not. He’s made enough problematic statements that there’s an entire Wikipedia article titled “Views of Richard Dawkins“.
  • Redshift is an increase in the wavelength of electromagnetic radiation, including visible light, that occurs when observing objects which are moving away from us – making the light from very fast moving objects over large distances appear redder than it truly is. This is mostly observed with the light from distant stars as the universe expands. It can happen in the opposite direction too, with the wavelengths getting shorter, which is known as blueshift. Kat mentions Terry’s use of it in Thief of Time; she also mentioned that it appears in Thud! but we cut that as we didn’t want to spoil a book we’ll be covering very soon.
  • You can get a good overview of Monopoly‘s history as The Landlord’s Game via episode 189 of the 99% Invisible podcast, “The Landlord’s Game“. In recent years there’s been renewed interest in Elizabeth Magie’s original 1904 game, which tried to popularise Georgism, an alternate form of land tax. You can find out way more about it at landlords-game.com. Meanwhile, if you still think the modern game is fair, check out this monopolynerd.com blog post from 2012 which breaks down the probability of getting a full set of properties through luck (i.e. landing on them and buying them, without having to trade with other players), based on turn order.
  • I’m You, Dickhead is officially available for free here on YouTube. Note that it really lives up to the title; there’s swearing and the protagonist truly is a dickhead.
  • Bees and wasps (and ants) are members of the order Hymenoptera, a group of insects that includes more than 150,000 species. Spider wasps, the parasitic wasps which prey on spiders, are in the family Pompilidae; there are around 5,000 species of them, most of which specialise in specific kinds of spider.
  • The telephone is usually attributed to Alexander Graham Bell, who was the first American to be granted a patent for the device in February 1876. But even at the time this was controversial; rival inventor Elisha Gray also filed for a patent the same day, and Bell’s patent was suspended for three months so the matter could be settled – which it was, eventually, in Bell’s favour. But there are plenty of good reasons to think this wasn’t entirely fair or just… (Ben didn’t mean to conflate this dispute with the War of the Currents, but they two conflicts have a very similar vibe.)
  • Elizabeth Fulhame was a chemist lived in Edinburgh in the late 18th century, though some details of her life are lost to history. The book from which Kat quotes is An Essay On Combustion with a View to a New Art of Dying and Painting, wherein the Phlogistic and Antiphlogistic Hypotheses are Proved Erroneous, which she published in 1794. Catalysis, which she describes in the book, is the now commonplace practice of speeding up a reaction between two chemicals by using a third substance, a catalyst, which isn’t affected by the reaction.
  • Kat is remembering The Science of Doctor Who, which did indeed star Brian Cox and was broadcast on BBC Two in November 2013 as part of the programme’s fiftieth anniversary celebrations… Which means Ben has it one the Blu-Ray box set he has of all those anniversary specials!
  • We’ve previously mentioned the cellulose billiard balls way back in #Pratchat1, “Boots Theory” (about Men at Arms), and #Pratchat10, “We’re Gonna Need a Bigger Broomstick“ (about Moving Pictures). The 99% Invisible episode about the invention of cellulose mentioned by Ben is The Post-Billiards Age from May 2015, which we also mentioned in both of those episodes.

More notes coming soon!

Thanks for reading our notes! If we missed anything, or you have questions, please let us know.

#Pratchat59 – Charlie and the Whale Factory

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Scientist, writer and editor Dr Kat Day joins Liz and Ben on a timey-wimey to Roundworld, as the wizards once again try to save humanity in Pratchett’s third collaboration with Ian Stewart and Jack Cohen: 2005’s The Science of Discworld III: Darwin’s Watch.

Roundworld – the impossibly non-magical universe in a bottle which runs on rules – has gone wrong again, and the wizards feel duty-bound to set it right. Humanity’s survival depends on the publication of a specific book, but something is trying very hard to make sure its author writes a different one…or gets eaten by a giant squid. With the fate of humanity hanging in the balance, the wizards go to war – but who is their hidden enemy? And why is there one beardy fellow too many in the Great Hall?

In the (short) fiction chapters, the wizards must once again travel into Roundworld history, this time with a clear mission: to get Charles Darwin onto the Beagle so he can write The Origin of Species. In the science chapters, Jack and Ian have a focus – the importance of the theory of evolution – but they also feel free to use the time travel plot to explain infinity, DNA, the nature of science and history, and much more besides. They’ve learned to stay away from the cutting edge – but have they come entirely out of the “philosopause” they didn’t seem to know they were in last time?

Does the plot rely too much on prior knowledge of the Discworld? Is that really a problem, given the nature of the book? Did you follow the explanations of Minkowski spacetime and the different kinds of infinity, or were you happy coasting across the science chapters? Do they completely miss the point in that last non-fiction chapter – and does it really matter, when the end of the fiction part is so satisfying? Join in the conversation using the hashtag #Pratchat59 on social media!

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Guest Dr Kat Day is a chemist, a former teacher, a medical editor and a writer of both science and fiction. Kat became well known via her chemistry blog The Chronicle Flask, which is currently on hiatus; you can also find her fiction at the fiction phial. Kat is also an assistant editor for Pseudopod, the horror fiction anthology podcast from Escape Artists. Kat recommended the story “Celestial Shores” as a possible entry point for Pratchett fans, as well as “Let the Buyer Beware” from Pseudopod’s sister podcast for young adult speculative fiction, Cast of Wonders. Over on Twitter you can follow Kat at @chronicleflask, and Pseudopod at @pseudopod_org.

As usual, you can find notes and errata for this episode on our web site.

Next episode Pratchett turns sixty! As promised back in #Pratchat30, we’re doing another all-questions episode. This is your chance to send in questions about books you missed first time round, pitch your wild Discworld theories, and ask us pretty much anything you like that doesn’t fit into the usual book-focussed episode. We’d also love you to answer our questions: what are do you enjoy most about the show? What kind of episodes do you wish we’d do? Which of our opinions have you most disagreed with? And have you learned anything from us? (Ben sure has!) Send us your answers, and questions, using the hashtag #Pratchat60, or via email to chat@pratchatpodcast.com.

Oh, and in November, get ready for a double-header: not only are we reading Thud! with educator Matt Roden for #Pratchat61, but we’re cooking up a bonus crossover episode! Yes, we’re teaming up with Jo and Francine from The Truth Shall Make Ye Fret, another great Pratchett podcast, to discuss Where’s My Cow?, the hottest children’s book in Ankh-Morpork. We thought we’d let you know a little early, since it might be tricky to track down a copy…

Want to make sure we get through every Pratchett book? You can support Pratchat for as little as $2 a month and get access to bonus stuff, including the exclusive supporter podcast Ook Club! Click here to find out more.

#Pratchat29 Notes and Errata

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These are the show notes and errata for episode 29, “Great Rimward Land“, featuring guest Fury, discussing the 1998 Discworld novel The Last Continent.

Iconographic Evidence

Feast your eyes on Fury’s glorious illustration of Trunkie!

Notes and Errata

  • This episode’s title puns on the Icehouse song “Great Southern Land“, a big hit in Australia which also featured on the soundtrack of Yahoo Serious’ 1988 Australian comedy film Young Einstein. In retrospect both the song and the film might have been expected to show up parodied in The Last Continent…
  • Our pre-show disclaimer uses the phrase “going off like a frog in a sock”. “Going off” on its own means to put a lot of energy or excitement into something, sometimes in anger, but in the frog idiom always in a fun way. Unusually for Australian slang, this isn’t ironic, just a straight-up metaphor; imagine you’ve caught a frog in a sock and it’s trying to get out, and you’ll get the idea. (And no, Australians don’t actually catch frogs in socks, this is strictly a thought experiment.)
  • The Kiwi-Aussie portmanteau is spelled “Kaussie“, whereas the slang for swimwear is “cossie“; it’s short for “swimming costume”.
  • The South Australian television personality who keeps getting in fights on the Internet is Cosi, host of South Aussie with Cosi, a travel show produced by Channel 9. (Not to be confused with Cosi, the play by Australian playwright Louis Nowra, previously discussed in #Pratchat23, “The Music of the Nitt“.)
  • “Swimming togs” comes from the British slang word “togs”, which just meant clothes. It’s one of a number of slang terms now archaic in the UK which have survived in some form in Australia.
  • Helen Zaltzmann is host of The Allusionist, a podcast about language, and one of Ben’s favourites. We’re sure she’d be the first to tell you that not every word – slang or otherwise – has a satisfying true origin story.
  • Stephen Briggs was a frequent collaborator with Terry, beginning with the original map of Ankh-Morpork. He also contributed to the diaries, The Discworld Companion and many other books outside the main novels. He adapted many of the books into plays, some of which have been published, and has read the audiobook versions of more than 30 of Terry’s novels. (Stephen Fry reads the UK editions of the Harry Potter audiobooks; if you’ve heard the US versions, those are read by Jim Dale.)
  • Mike Schur’s afterlife sitcom The Good Place set much of its third season in Australia, and copped much criticism from actual Australians for the quality of the accents. You couldn’t fault the jokes, though – or the punny names of the restaurants, shops and incidental characters in those episodes.
  • Pretty Little Liars is a teen mystery TV series based on the books by American YA author Sara Shepard. The UK accented character is antagonist Alex Drake, who shows up in season 7. We’d tell you more, but…spoilers.
  • The extreme Australian wizard slang originated in a reply to a tumblr post from about JK Rowling’s the introduction of the American term for muggle, “no-maj”; you can find the original here, but just in case it vanishes from Tumblr forever, we’ll immortalise the words of user edenwolfie here (and a quick warning – we haven’t censored the print version). We’d also like to point out that Australian wizards and witches would most likely spell it “muggo”.

I can just imagine the Australian word being some awful slang that’s derived from muggle, such as “mugo”.

Ah, I can imagine it now, wizards in thongs, drinking butter-VB yelling “You’re such a fucking mugo, you wandless cunt!”

edenwolfie, Tumblr, 11 November 2015
  • Minotaur is Melbourne’s biggest independent pop culture and science fiction bookstore. Many of Terry’s early Melbourne signings occurred at its original location on Bourke Street, but it moved to Elizabeth Street in 2000.
  • PhanCon ’98 was a one-off fan science fiction convention held in Sydney in 1998. Information on it is in short supply, but guests included Terry Pratchett and British fantasy author David Gemmell.
  • Comet Shoemaker-Levy-9 broke up in 1992 and smashed into the planet Jupiter in 1994, to much excitement (on Earth at least). It was named for astronomers Carolyn Shoemaker, Eugene M. Shoemaker and David Levy, who discovered it after it had been captured by Jupiter’s gravity into a decaying orbit.
  • English scientists did indeed doubt the reality of the platypus, which not only has a unique and wonderful anatomy, but is one of just two surviving monotremes – a group of mammals that lay eggs. (The other one is the echidna.) As well as its distinctive bill, it has sharp ankle spurs which in the male can inject venom, and the ability to sense electric fields as a way of locating prey.
  • The Dreaming is a sophisticated concept in the stories of Aboriginal cultures. It has a complex relationship to space and time, existing both long ago and now, but despite the name – which was coined by Europeans – it has nothing to do with dreaming. An older term, “dreamtime”, is generally no longer considered appropriate. We recommend reading up on the topic; one good place to start is this article at Common Ground.
  • Boomerangs bought in stores and thrown to return are, indeed, toys. Hunting and war boomerangs were generally much larger, sharpened, and often had one wing longer than the other.
  • The Adventures of Priscilla, Queen of the Desert is a 1994 Australian comedy film which was a surprise box office hit often considered hugely significant in the history of queer cinema. It follows two drag queens (Hugo Weaving and Guy Pearce) and a trans woman (Terence Stamp) as they travel from Sydney through the outback to perform in Alice Springs. Though initially praised for its queer-positive message, the portrayal of Filipino character Cynthia attracted widespread criticism for relying on racist stereotypes of Asian women common in Australia. Original writer and director Stephan Elliott adapted the film into a stage musical, Priscilla, Queen of the Desert, in 2006; the musical retains the characters and plot more or less unchanged, but hasn’t been criticised nearly as much for the character of Cynthia.
  • The opal fossils gallery at the South Australian Museum is still there, and you can see the skeleton Ben mentioned. The web site is sketchy on details, so we can’t confirm if it’s an Elasmosaurus or another species of plesiosaur, but we still recommend you check it out yourself!
  • The protagonist wizard (or at least wizarding student) in Moving Pictures was Victor Tugelbend. Other wizards not part of the regular faculty include Drum Billet, Archchancellor Cutangle, Simon and Esk (Equal Rites); Igneous Cutwell (Mort); Alberto Malich (Mort and most other Death novels); and Ipslore the Red (Sourcery).
  • Dirk Gently’s Holistic Detective Agency is more-or-less a mashup of two of Douglas Adams’ Doctor Who scripts: the unfinished Shada, and City of Death, which contributed the storyline about time-travelling aliens who crash on Earth in the distant past and spark life on the planet. There are other elements in it which are wholly original, perhaps most notably the Electric Monk. This description applies to the original novel; the television adaptations, especially the US one, are very different.
  • Mot was indeed a French cartoon series about a purple monster who could travel through time and space, taking his young friend Leo on various adventures. It was based on the French children’s comics created by Alfonso Azpiri. It was aired on Australian television in the late 1990s.
  • Thanks to listener and supporter Molokov, who pointed out that Rincewind’s magical ability to find “bush tucker” might be a reference to retired army Major Les Hiddins, aka “the Bush Tucker Man“. Hiddins researched Australian native foods as part of his army career by working with Aboriginal peoples, mostly in northern Australia. He came to national fame through The Bush Tucker Man television series on the ABC in the late 80s and early 90s. In each episode Hiddins, wearing his trademark larger-than-usual Akubra hat, visited a part of Outback Australia and introduced viewers to the local edible plants and animals. Hiddins wrote several books, and then disappeared onto a remote retreat he created in the bush for retired army service people, before returning to the public eye in 2019 with a new website: bushtuckerman.com.au
  • We discussed Interesting Times back in episode 21, “Memoirs of Agatea“.
  • Black Sheep was released in 2006, written and directed by Jonathan King with special effects by Peter Jackson’s Weta Workshop. It seems the main way to watch it now is via the Amazon Prime Video streaming service, though it should also be available on DVD.
  • Terry has not always had kind things to say about Rincewind; he suggested the wizard’s job is “to meet more interesting people” than himself, lamented Rincewind’s lack of an inner monologue, and did indeed feel like he was running out of things to do with an eternally cowardly character. Agatha Christie’s negative feelings about Poirot are well-documented, from as early as 1930; in a notable quote from 1960 she describes him as a “detestable, bombastic, tiresome, ego-centric little creep”. But she refused to kill him off because she felt she had a duty to keep writing about a character that was still so popular with the public.
  • Michael Moorcock was an English fantasy author who created a number of characters including Elric of Melnibone, one of several incarnations of “the Eternal Champion”, fated to be reborn through the ages and battle in the primeval war between the forces of Law and Chaos.
  • We discussed Only You Can Save Mankind in our previous episode, “All Our Base Are Belong to You“.
  • Skippy the Bush Kangaroo (aka Skippy) was an Australian family television series about an usually smart kangaroo who helped park ranger’s son Sonny have various adventures. It was very much in the mould of Lassie or Flipper. It ran from 1968 to 1970, and there was a brief sequel series in 1992 featuring Sonny as an adult. It was broadcast in most Commonwealth countries, as well as the US and many Spanish-speaking countries including Mexico, Cuba and Spain.
  • We’ve mentioned it before, but you can find the Annotated Pratchett File at the old L-Space Web site. Its successor is the L-Space Wiki.
  • The Moa is a large extinct flightless bird, similar to a Cassowary. Like many megafauna of Australia and New Zealand, they were hunted to extinction, in the Moa’s case by the Māori peoples.
  • “Jeremy Bearimy” is an explanation of how time works in the afterlife in the sitcom The Good Place. Rather than a straight line, the flow of time there resembles a curve which looks like a signature reading “Jeremy Bearimy”. The dot in the i (or tittle) is a weird separate bit of spacetime.
  • “Guzzaline” was the term used for petrol in Mad Max: Fury Road, the fourth Mad Max movie, released in 2015. It stars Charlize Theron as Imperator Furiosa, a driver for a despotic warlord in post-apocalyptic Australia. Tom Hardy appears as Max Rockatansky, the titular character, who was the protagonist of the previous three films, where he was played by Mel Gibson.
  • When Liz refers to Darwin, she means the city, which is the capital of Australia’s Northern Territory. It was named for Charles Darwin by John Clements Wickham during a subsequent voyage of the ship Darwin took on his famous voyage, the HMS Beagle.
  • In Jurassic Park, palaeontologist Alan Grant claims to know that the Tyrannosaurus rex – portrayed in the films as a ferocious predator – has vision “based on movement”. This is one of many things that make no sense in the film. Have a few drinks with Ben, or your local friendly palaeontologist, and they’ll tell you about some others.
  • Richard Dawkins is now best known for heavy-handed criticism of religion and, most recently, feeling the need to confirm that whatever you think of it, eugenics works. But he initially found fame for his pretty good books on evolutionary biology. In The Selfish Gene, first published in 1976, he popularised the idea that the gene is the basic and most important unit of evolutionary information, and also coined the term “meme”, meaning the behavioural or cultural equivalent of a gene.
  • Historians, archaeologists and anthropologists frequently find evidence that revise the likely length of Aboriginal culture’s existence in Australia about every six months – usually making it older. Current estimates range from 50,000 to 125,000 years.
  • You can read about the Sydney baboon escape from late February 2020 in this article at The Guardian – written by previous Pratchat guest, Stephanie Convery! (Steph was a guest in #Pratchat2, and later returned for #Pratchat42.)
  • You certainly used to be able to get tea-towels and such that were supposedly from “Didjabringabeeralong, The Outback”, but these days we’d like to think we’re a bit more culturally sensitive. The unique names of many Australian towns and cities – like Wagga Wagga, Geelong and Nar Nar Goon – are drawn from local Aboriginal languages, many of which have been lost as those peoples were displaced or massacred by Europeans.
  • Tank Girl is a punk-inspired comic book series by created by British writer Jamie Hewlett and artist Alan Martin. Tank Girl is the main character, who lives in a tank in post-apocalyptic Australia. She’s accompanied on her adventures by her mutant kangaroo boyfriend, Booga. The comic was adapted into the 1995 film Tank Girl, directed by Rachel Talalay and starring Lori Petty as Tank Girl and Naomi Watts as her friend Jet Girl (who has a jetpack), with Malcolm McDowell as the antagonist. It has a cult following but was not a big success.
  • Listener Ian Banks in our Discord pointed out that another, probably more likely inspiration for the anthropomorphic animals is The Magic Pudding, a 1918 children’s book written and illustrated by famous Australian artist Norman Lindsay. The story’s main characters are Bunyip Bluegum (a koala person), human sailor Bill Barnacle, and Sam Sawnoff (a penguin person). The titular pudding, Albert, has a face, arms and legs, and regenerates, so he can supply an infinite amount of food. The story also features “pudding thieves” Patrick and Watkin, a possum and wombat respectively.
  • We want to make it clear that despite Liz’s hangups, marsupial pouches are not dirty; kangaroos lick theirs clean before their joeys enter them.
  • Barry McKenzie, a creation of Australian comedian Barry Humphries, began life as a comic strip character in the pages of UK comic magazine Private Eye in 1964. A parody of the Australian abroad, he is a hard-drinking, womanising, simple-but-forthright “larrikin” who gets himself into various scrapes. He was played by singer and actor Barry Crocker in two films in the 1970s, which also introduced Humphrie’s long-running character Dame Edna Everidge, who is Barry’s aunt. The films nearly killed director Bruce Beresford’s career, but he later went on to find fame and success, with such big films as Driving Miss Daisy and Mao’s Last Dancer.
  • “Squids” in the book is almost certainly a pun on “quid”, slang for a pound sterling in the UK and pre-decimal Australia. It’s still used occasionally as slang for money in Australia, usually in the phrase “a few quid”.
  • In case you missed it, the shearing competition in the book is clearly inspired by the Australian folk song “Click Go the Shears“.
  • We cut the discussion for time but “something for the weekend” reminded Ben of ska band Madness’s song “House of Fun”, which is about a teenager who has turned sixteen and is using various euphemisms to try and buy condoms at his local chemist.
  • In The Man From Snowy River, the actual description of the hero’s horse is “something like a racehorse undersized”.
  • As alluded to in the book, drop bears are a fictional cousin of the koala, a horrible killer animal which waits in treetops to drop on and eat children. Inventing dangerous creatures has been a long-running prank played on visitors to Australia, playing on their fears of the real deadly animals that live here. A recent incidence of the drop bear was this prank played on a UK reporter visiting to report on the bush fires.
  • The bush ballad “Waltzing Matilda” is thought by academics to describe the Great Shearer’s Strike of 1891, in which shearer’s killed a number of sheep and one of their number, being chased by police, killed himself rather than be taken alive. A lot of the slang in the song is never heard anywhere else anymore – including “jumbuck”, a term for sheep thought to have been derived from an Aboriginal language. There are many versions of the lyrics, but the most famous one was adapted by the Billy tea company. In some, Liz’s question becomes moot, as the troopers ask “Whose that jolly jumbuck”, rather than “Where’s“.
  • If you’re confused by Liz’s “cat in a bag” antics, you can read about Schrodinger’s Cat and other feline behaviours in our discussion of Pratchett’s non-fiction humour book The Unadulterated Cat. You’ll find it in #Pratchat22, “The Cat in the Prat“.
  • The Domestic Blindness sketch was indeed part of vintage 1980s Australian sketch comedy show The Comedy Company; you can find it on YouTube here.
  • Listener and previous guest Avril (who you might remember from #Pratchat16, “He Ain’t Heavy, He’s My Vorbis“) points out that the god’s love of beetles is likely a reference to English geneticist and evolutionary biologist J. B. S. Haldane, perhaps most famous for writing about abiogenesis and the idea of “primordial soup”, among many other accomplishments. In response to being asked what his study of nature might reveal about the Creator, Haldane is perported to have said “that He is inordinately fond of beetles”, due to the phenomenal number and variety of beetle species. While this exact response might be apocryphal, he definitely said something equivalent many times, both in print and in speeches.
  • Gachnar the Fear Demon appears in the fourth season Halloween episode of Buffy the Vampire Slayer, “Fear, Itself”, from 1999.
  • Australian cockroaches are not actually Australian at all – they live all over the world, and probably originally come from somewhere in Africa.
  • White-tailed spiders are small spiders native to south-eastern Australia. They are not aggressive but might bite if disturbed, and like to hide among leaf litter. They were demonised in the media during the late twentieth century as their bite supposedly caused necrosis, but medical research in the early twenty-first century didn’t find evidence of any such symptoms. Instead, the spider’s venom caused only unpleasant but mild symptoms, especially by Australian standards.
  • The Stonefish is a real fish, one of the most venomous in the world. It disguises itself as a stone in order to catch smaller fish as prey, but has sharp spines on its back which deliver venom as a defence against predators. Four of the five species live outside Australian waters; their sting can be treated with hot water (which denatures the venom) and anti-venom.
  • Last Chance to See was a 1989 radio documentary following Douglas Adams and zoologist Mark Cawardine as they travelled the world to visit nine different endangered species. Adams turned it into a book in 1990, and in 2009 Stephen Fry joined Cawardine for a sequel television series, accompanied by a new book.
  • Pauline Hanson is a right-wing populist politician from Queensland who rose to fame when she ran for federal parliament in 1995 as a member of the conservative Liberal Party. They dis-endorsed her after she made racist comments about Aboriginal Australians, and she formed her own party, One Nation, and won a seat. She was found to have committed electoral fraud and jailed, though the charges were subsequently overturned on appeal. She left her own party in 2002 over those charges, but remained a figure in the Australian media, aided by appearances on breakfast television and the reality show Dancing with the Stars. She returned to politics and One Nation in 2013, and was elected to the Australian Senate in 2016. She is famous mostly for various racist views that very much align with those of Fair Go Dibbler.
  • Lost is a TV series about a bunch of plane crash survivors who find themselves lost on a mysterious island. It famously makes no sense whatsoever and it’s generally considered that it’s creators, JJ Abrams and Damon Lindelof, were making it up as they went along to stay ahead of the guesses of fans on the Internet about what was really going on.
  • The Galah (pronounced “ga-LAR”) is a large, loud pink and grey cockatoo (a type of parrot), common in many parts of Australia. “Galah” is also slang for a ridiculous or foolish person.
  • The Sydney Gay and Lesbian Mardi Gras is a one of the largest pride parades in the world. It happens annually on the first Saturday in March, and started in 1978. It draws massive crowds from all over the world.
  • Intersex people are born with genetic and/or physical characteristics associated with both of the traditional genders. While the statistics are sometimes contested, it’s thought as many as 1.7% of people are born with some kind of intersex characteristics. The I in LGBTIAQ+ is for intersex.
  • The infamous Australian episode of The Simpsons, “Bart vs Australia”, is from the show’s sixth season in 1995.
  • The tough guy who appreciates art in Thief of Time is probably Newgate Ludd.
  • Damian Callinan’s The Merger started life as a one-man show, but was adapted in 2018 into a feature film. You can find it on the free streaming service Kanopy if you are a member of a library that subscribes to it, and its now on Netflix in many regions too.
  • The original Harry’s Cafe de Wheels started out in Woolloomooloo, a harbour-side inner suburb of Sydney, as a “caravan cafe” specialising in serving late night pies. It was founded by Harry “Tiger” Edwards in 1936. It’s been patronised by many international celebrities and there are now several Harry’s cafes around Sydney and New South Wales – though not, despite Ben’s later confusion, in Adelaide.
  • The word for the smell you get after it rains – specifically, the smell of earth after it rains – is “petrichor”. Hopefully it’s okay for us to use it as we’re not writing a poem.
  • Tropical areas – such as the northern part of Australia – are often described as having Wet seasons and Dry seasons. The Wet season is also known as monsoon season or the Rainy season in some parts of the world.
  • You can read about the six seasons described by the Kulin people of Melbourne on this web site.
  • To avoid any confusion: in Good Omens, it’s said that any cassette tape left in the glove box of a car transforms into Queen’s Greatest Hits. In Mort, it’s said that no matter what’s put into it during the day, a pantry raided in the middle of the night contains only some very specific and disappointing items.
  • “How to Make Gravy” is a 1996 song by Australian singer-songwriter (and national treasure) Paul Kelly. It was originally written and released as part of a Christmas charity album benefitting the Salvation Army, when Kelly found out the song he initially wanted to cover had already been picked by another band. In Kelly’s song the narrator, Joe, has been sent to prison; the lyrics are a letter he’s writing on December 21 (dubbed “Gravy Day” by some fans) lamenting that he won’t be home for Christmas, and giving his brother his gravy recipe, since that’s his usual contribution to the Christmas cooking. It became a surprise hit and was nominated for the APRA song of the year award in 1998. Below is the official video. (We’ll mention the song again in the Oggswatch Feast 2021 bonus Christmas episode.)
  • Captain Raymond Holt is the captain of police precinct 99 in the sitcom Brooklyn-99. He – like all the characters in the show – is wonderful.
  • Umami is the “fifth taste”, after the other basic tastes of sweet, sour, bitter and salty. The word comes from Japanese, and translates as “pleasant savoury taste”, being derived from the word umai, “delicious”. Other foods with an umami taste include various vegetables, mushrooms, shellfish, cured meats and green tea.
  • Barnaby Joyce is (as of March 2020) the current leader of the National Party, a conservative party popular in rural areas. They have a long-standing coalition with the Liberal Party; the Liberal-National coalition are currently in government. Tony Abbott is a former leader of the Liberal Party who was Prime Minister of Australia for a brief period, before being ousted in favour of the more moderate Malcolm Turnbull. He lost his seat at the last federal election. Both are pretty weird units, to use an Australian phrase, with their share of scandals, bizarre behaviour and controversy.
  • “Where the bloody hell are you?” was the key question asked by model Lara Bingle at the end of a largely ridiculed Australian tourism ad produced for the international market in 2006. It was controversially banned on release in the UK, despite costing 180 million Australian dollars, and despite its infamy was considered a failure. It was overseen by now Prime Minister Scott Morrison, who at the time was Managing Director of Tourism Australia; this led to some reprise of the question directed at him – including by Bingle herself on social media – when he was overseas on vacation during the beginning of the disastrous 2019-2020 bush fires. It was also part of the inspiration for his derisive nickname “Scotty from Marketing”. You can watch the original ad on YouTube here.
  • Paul Parker found internet fame after he angrily reacted to Prime Minister Scott Morrison’s comments that members of Australia’s volunteer fire fighting organisations “want to be out there” fighting the unprecedentedly fierce bushfires that raged in late 2019 and early 2020. In a video that went viral, he leaned out of his firetruck and asked a Channel 7 news crew to tell the Prime Minister to “go and get fucked from Nelligen”. After there were (disputed) claims this got him sacked from the Rural Fire Service (a volunteer organisation), another video emerged of him saying that Pauline Hanson was the only politician who cared about Australia. The whole saga is covered by Jan Fran in her first “The Frant” video for The Guardian.
  • “I’m not here to fuck spiders” is a slang expression meaning “I’ve got serious work to do,” most often used in response to a question about one’s intentions. It is also used as a more emphatic version of “I’m not here for a haircut”, which is a sarcastic response to being asked if one has come to a place to do the obvious thing, like being asked in a car dealership if you want to buy a car. It’s been a matter of debate for some years whether “not here to fuck spiders” is a “real” expression, or if it was invented as a joke and since been embraced by Australians. Looking through Google’s trends tool, which goes back as far as 2004, the first and biggest spike in searches for the phrase is in November 2005; then there’s very little until it slowly increases in search popularity from 2010, with smaller spikes since 2018 where it has been mentioned by Australian celebrities. The only reference Ben could find from 2005 were a series of replies to a forum post asking about the phrase, many of which seemed to suggest straight up examples of having heard it years before that… It’s worth mentioning that one of the repliers had come to the thread because they heard it from an Australian comedian, which might mean it was made up as a joke, or it could just mean that was the first time people who didn’t get it were hearing it.
  • The Man From Snowy River television show is not actually related to the 1982 film starring Sigrid Thornton and Tom Burlinson. The TV series starred Andrew Clarke as Matt McGregor, the stockman from the poem, and is set 25 years after the events depicted in the poem. It ran from 1993 to 1996.
  • Bore water is water drawn from underground sources, usually by drilling a borehole into an artesian aquifer – a porous underground layer of the Earth’s crust in which water is stored or flows. In Australia, the source is most commonly the Great Artesian Basin, a huge artesian aquifer under large parts of Queensland and its neighbour states.
  • “Advance Australia Fair” has been the official Australian anthem since 1984, though it was written far earlier, in the late 1870s. It was chosen in a plebiscite attached to the 1977 referendum about voting and political reforms. It beat “Waltzing Matilda”, “The Song of Australia”, and the previous anthem “God Save the Queen”. (For more on this, see #Pratchat53, “A (Very) Few Words by Hner Ner Hner“, in which we compare the Australian and Ankh-Morpork national anthems.)

 

#Pratchat35 – Great Balls of Physics

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Liz, Ben and science communicator Anna Ahveninen have the weird sensation of being a specimen in a jar as they discuss 1999’s The Science of Discworld, co-written by biologist Jack Cohen and mathematician Ian Stewart.

By bribing the Unseen University faculty with the promise of cheap heating, research wizard Ponder Stibbons gets permission to try splitting the thaum, the magical equivalent of the atom. The experiment is a success, but fills the University with dangerous raw magic. To use it up, sentient thinking machine Hex initiates “the Roundworld Project”, the creation of a reality devoid of magic. The universe in a bottle that results has no narrative imperative, only one kind of light, and not a single star turtle. What it does have are rocks, flaming balls of gas and rules. This all seems very unnatural to the wizards, so there’s only one thing to do: poke it with a stick and see what happens…

After reading one too many “Science of Star Trek” books, science writers and Pratchett fans Jack and Ian joined forces with Sir Terry to write a book in which they would use the wizards’ exploration of a bottle universe to explore our own, and the science that explains it. The concept was a bit of a gamble, and no-one wanted to publish it at first, but it proved a big hit, spawning three sequels and a major revision to this first volume, three years later. The Science of Discworld concentrates on the beginning and evolution of the universe and the history of life on Earth, with plenty of asides about the nature of science and how it is taught (including the now famous concept of “lies-to-children”). In between these essays, the Unseen University wizards poke our own “Roundworld” with a big stick and try to make sense of a world without magic – in part by forcing Rincewind into the role of virtual astronaut.

What did you learn from The Science of Discworld? Do you enjoy the alternating fantasy and science chapters? How does it compare to the other “The Science of” books? And does the science still stand up, eighteen years after the revised edition of 2002? Use the hashtag #Pratchat35 on social media to join the conversation!

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Guest Anna Ahveninen is a science communicator, writer and (ex) chemist who currently works at the Australian Academy of Science. You can follow her on Twitter at @Lady_Beaker. Anna also wanted to give a shout out to the STEMMinist Book Club (the second M is for Medicine), who you can also find on Twitter at @stemminist, and on Goodreads.

Turns out we jumped the gun a little with Collisions – the Liminal magazine fiction anthology won’t be published until November! We’ll remind you in a couple of episodes.

Next month it’s back to the Ramtops for our favourite coven’s last hurrah, as Lancre is invaded by vampires in Carpe Jugulum! We’ll be joined by actor, singer and cabaret star Gillian Cosgriff. Get your questions in via social media using the hashtag #Pratchat36, or send us an email at chat@pratchatpodcast.com.

You’ll find the full notes and errata for this episode on our web site.

Want to make sure we get through every Pratchett book? You can support Pratchat for as little as $2 a month and get access to bonus stuff, including the exclusive supporter podcast Ook Club! Click here to find out more.

#Pratchat47 Notes and Errata

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These are the episode notes and errata for episode 47, “A Finite Number of Shakespeares“, featuring guest Alanta Colley, discussing the second collaboration between Terry Pratchett, Ian Stewart & Jack Cohen: 2002’s The Science of Discworld II: The Globe.

  • The episode title is a reversal of the “infinite monkey theorem”, which states that an infinite number of monkeys typing randomly on typewriters will “almost surely” eventually produce the complete works of Shakespeare. In this book, a single Shakespeare eventually (after much tampering with history) produces a species descended from monkeys that can invent and use typewriters – modern, storytelling humans.
  • The most recent Sci Fight, “Should we upload our brains into the cloud?”, was held online on Thursday, 12 August 2021. The debate is available on YouTube, and was part of Melbourne Science Gallery‘s exhibition “MENTAL“.
  • You can find out more about Alanta’s comedy shows, including Parasites Lost, at alantacolley.com.
  • Melbourne’s six lockdowns began with two in 2020 – March 29 to May 12 and the big one, from July 9 to October 26. There have been four in 2021: from February 12 to 17; May 28 until June 10; July 16 to 27; and the current one, which began on August 5 and is not expected to end until the Victorian population reaches an 80% vaccination rate, estimated to happen by December.
  • We covered The Science of Discworld a year ago in #Pratchat35, “Great Balls of Physics“, with guest Anna Ahveninen.
  • Alanta makes the reasonable assumption we’ve had “forty-six prior guests” – but, thanks to a few repeat offenders and some double-guest episodes, the actual count to date is forty (including Tansy Rayner Roberts in our first live bonus episode).
  • Douglas Adams’ famous love of long baths was a trait he passed on to the Captain, a character who appears at the end of most versions of The Hitchhikers’ Guide to the Galaxy, commanding his starship from the bath. You can read about his bath habit – er, Adams’, not the Captain’s – in this great piece by his friend Jon Cranter for The Guardian.
  • The photo of Pratchett with Jack and Ian was taken at Warwick University – where Jack and Ian were both researchers – on July 14, 1999, just after he made them honorary wizards of Unseen University, and the University made him a Honorary Doctor of Letters. (The photo from the book is different, but you can see another one in this article from the time on the Warwick University website.) This was the first of Pratchett’s ten honorary degrees, which we listed in the notes for #Pratchat27.
  • The History and Philosophy of Science is a distinct humanities discipline, combining the study of both…er…the history and the philosophy of science. It arose from the fact that the philosophy of science has been primarily studied from an historicist perspective: deducing what it is and how it works by studying the history of its development.
  • Mustrum Ridcully famously has no time for meetings or long explanations; in Reaper Man it is explained this way:

…it took him several minutes to understand any new idea put to him, and this is a very valuable trait in a leader, because anything anyone is still trying to explain to you after two minutes is probably important and anything they give up after a mere minute or so is almost certainly something they shouldn’t have been bothering you with in the first place.

Terry Pratchett, Reaper Man (1991)
  • On another look, Ben isn’t really sure why he was confused about how the wizards end up on Roundworld; Ridcully explains to Ponder in Chapter 5 that the elves passed through Discworld to get into Roundworld, and he and the faculty were caught up in the “trans-dimensional flux” (Ponder’s words, obviously). They landed in London because Dee had made a magic circle – Hex further explaining that while magic doesn’t work in Roundworld, it can create “passive receptors” for outside magic to connect to, as with the crystal ball he uses to communicate.
  • The other Discworld element (or substance, at least) Ben couldn’t remember the name of is “deitygen“, which Ridcully says is known to be produced by intelligent beings. While Narrativium is the most important element on Discworld, the world itself is said in The Truth to be composed of Air, Earth, Fire and Water – though there is also an important fifth element: Surprise.
  • Mind-body dualism is the idea that the mind is a non-physical substance, i.e. that mind and matter are not the same kind of thing. There are several different flavours of this philosophy. Cartesian dualism, more generally known as substance dualism, is the one discussed in the book; others are subtly different, suggesting that while there are the mind is distinct, it is not a different type of substance to ordinary matter. (Note that when we say “substance” here, we mean it in the philosophical sense that encompasses all things.)
  • Spontaneous Human Combustion is the idea that sometimes humans just burst into flames without any apparent external cause. It’s not taken very seriously these days, and critics and researchers – most notably science investigator Joe Nickell and forensic analyst John F. Fischer – have found that in most cases there were likely sources of flames near victims which were overlooked and not reported in popular accounts.
  • The bit in the book about humans being unable to imagine being a dog or a bat is in Chapter 26, “Lies to Chimpanzees”.
  • Liz read about the babbling baby bats in this article from the New York Times, though many new outlets picked up on this research about greater sac-winged bats (Saccopteryx bilineata), published in Science by Dr Ahana Fernandez and her team. This video from Science magazine gives you the short version.
  • That birds learn songs from their parents was first observed (in scientific terms at least) in the 1950s, when British ethologist Peter Marler noticed that chaffinches sang different songs in different parts of the country. His work showed that some birds are innate singers, while others learn their songs from their parents, creating regional differences or dialects. This has since been observed in many bird species.
  • Jack and Ian have written many other books, separately and in collaboration. Ben mentioned What Does a Martian Look Like? (aka Evolving the Alien) in #Pratchat35. On a related note, Ben spotted that in his first edition of The Science of Discworld II, in chapter 10, the authors introduce the idea of an elf visiting Earth in the distant past and observing our ancestors; this visitor is mistakenly referred to as a Martian several times afterwards, leading Ben to wonder if this was text originally written for the other book…
  • Ben previously mentioned Flatland and Ian Stewart’s sequel, Flatterland, in #Pratchat35. The science that Ben thought Ian did a particularly good job of explaining was string theory – the branch of physics that seeks to explain discrepancies between classic and quantum physics by saying that fundamental particles are not actually tiny points, but strings which exist in higher dimensions, and we only see the point that pokes into our three. (That’s a lie-to-Pratchat-listeners, but it’s on the right track; see chapter 16 of Flatterland, “No-Branes and P-Branes”.)
  • Dr Randolph M. Nesse is currently a Research Professor of Life Sciences at The Center for Evolution and Medicine at Arizona State University, and Professor Emeritus in the Departments of Psychiatry and Psychology, and the Institute for Social Research, at the University of Michigan. You can read a summary of his views on altruism and social selection – another kind of “group selection” in biology, where social groups who may not be closely related work together to survive – on his website here, with links to his articles on the subject, though he does not include the 1999 Science and Spirit piece cited in chapter 20 of The Science of Discworld II, “Small Gods”. He also wrote a book about commitment (as discussed the book), Evolution and the Capacity for Commitment, in 2001. Notably, though, he seems to have concluded that commitment offers only “a limited explanation for some special kinds of altruism … it did not offer the more general kind of explanation I wanted.” He refers to the work of Mary Jane West-Eberhard, who has studied altruism in animals, when discussing where his own work is heading.
  • Evolutionary medicine (including evolutionary psychiatry) is the scientific use of evolutionary biology to understand and treat diseases. It complements the standard “proximate” approach of looking for problems in an individual by looking at evolutionary explanations for why all humans have the potential to develop certain diseases. Randolph Nesse is a recognised leader in this field; his books on the subject include Why We Get Sick and Good Reasons for Bad Feelings. Evolutionary psychology is a similar approach to psychology, but while the idea behind it is sound, it suffers many of the testability and ethnocentric problems as regular psychology. Shallow interpretations of evolutionary psychology have also been used to prop up many harmful ideas, especially in terms of gender roles. Noam Chomsky, noted linguist and political activist, thinks evolutionary psychologists often ignore evidence that doesn’t support the political status quo.
  • The “Galaxy Song” – not “Universe Song”, though to be fair the name of the song is only mentioned in album liner notes – was originally written by Eric Idle and John du Prez for the 1983 film Monty Python’s The Meaning of Life. In the film, a medic (John Cleese) trying to convince a woman (Terry Jones) to donate her liver for a “live organ transplant” opens a door and a man (Eric Idle) steps out to accompany her through the universe while singing the song, making her feel small and insignificant enough that she agrees to the transplant. An updated version (“The Galaxy DNA Song“) was used for astrophysicist Brian Cox’s TV series Wonders of Life in 2012, and in 2016 another updated version appeared in the two-hour television program The Entire Universe Show, also hosted by Cox. It wasn’t included in any of the Python stage musicals, but an updated version did appear in the stage show Monty Python Live (Mostly) in 2014, including a video cameo by – you guessed it – Brian Cox, but also…someone else whose appearance we won’t spoil. The original is actually pretty good for the time – if you assume facts are rounded to the nearest singable number, then it gets several figures pretty close to correct. Liz may have quoted the speed of light to her teacher: the song gives this as “twelve million miles a minute” – not far off an accurate figure of 11.16 million miles per minute, though scientists would normally express it in round numbers as a bit under 300 million metres per second (299,792,458 m/s, to be more precise).
  • We’ve previously mentioned the 1994 film The Shawshank Redemption many times. The most significant discussions of it appear in #Pratchat14 and #Pratchat28, but we most recently talked about it in #Pratchat38 – so Ben is way off when he says we haven’t talked about it for “about 30 episodes”. (Though, given how long the last year or two has felt, we’ll give him a pass on this one.)
  • The history of the idea that storytelling makes humans unique goes back to at least the 1967, when the name Homo narrans was coined by German ethologist Kurt Ranke. American communications scholar Walter R Fischer used it in his later work, in which he also codified the “narrative paradigm” – the idea that all significant communication occurs through storytelling. (Pan narrans seems to be a unique contribution from Jack and Ian.)
  • Tom Stoppard’s Arcadia was first performed in 1993 at the Royal National Theatre in London, with a cast that included Rufus Sewell, Felicity Kendall, Bill Nighy and Emma Fielding. It is set in an English manor house belonging to the Coverly family, and happens in two time periods: in the present, two rival academics are researching the mysterious history of the house’s previous inhabitants at cross purposes, while one of the Coverly siblings is doing biology research. In the past of 1809, young lady of the house Thomasina Coverly has some advanced ideas about science and mathematics, while her tutor is caught up in drama with the house’s visiting poets. (Ben played the modern-day scientist, Valentine Coverly.)
  • The book Ben read about chaos theory was Chaos: Making a New Science by James Gleick. It should also be clarified that it was the play that was about complexity not chaos; the book is definitely about chaos.
  • The Luggage’s legs were the subject of much discussion in previous episodes; way back in #Pratchat14, when we discussed its debut in The Colour of Magic, we wondered if anyone had tried drawing it with non-human legs. It is described in the first two books only as having “little legs”, without any reference to them being human-like, or their colour, leading us to make a callout for fan art depicting them as…well, anything else! Josh Kirby has always drawn them as human-like, and made them white-person flesh coloured, despite the fact that the Luggage’s wood is a darker colour. We suspect this influenced Pratchett’s own image of the Luggage, and its next appearance in Sourcery is the first time it has “little pink legs”.
  • Hobbits, also known as halflings, are a kind of people found in the writings of J. R. R. Tolkien. They look like humans, but grow only to about three feet tall (hence the name), with slightly pointed ears. Aside from their size, their main difference from humans is their feet: they have extremely tough soles, and the ends of their legs from their ankles down, as well as the tops of their feet, are covered in thick curly hair to keep them warm. As a result, hobbits do not wear shoes. Clearly these sort of feet would suit the Luggage well!
  • John Dee (1527 – 1609) was, as described in the book, a real historical figure. An English mathematician, occultist, astronomer and astrologer (the two being far more closely linked back then), he advised Queen Elizabeth I, and is – unfortunately – credited with coining the term “British Empire”. He had one of the biggest libraries in England in his day, giving the wizards a handy portal into L-Space. In his later life, he found public opinion turning against sorcery, and while he was abroad much of his library and possessions were stolen, destroyed or burned. Once Elizabeth was dead, her successor James I had no interest in helping Dee, and he died in poverty in 1608 or 1609 at his home in Mortlake. He has been a popular character in works of fiction, though Ben is mistaken to think he has often been a villain; he’s perhaps confusing him with Doctor Destiny, a supervillain who appears in the Sandman comics by Neil Gaiman, and whose real name is John Dee, but is not meant to be the same person.
  • Stephen Pinker – a long-time defender of evolutionary psychology, it turns out – published The Language Instinct in 1994, well before The Science of Discworld II. The book not only argues that language is an innate trait possessed by humans, but also tries to debunk many commonly-held beliefs about language. It has been criticised for presenting too strong a view about how much of human behaviour can be explained by innate, biologically evolved instinct.
  • Swedish supergroup Abba reunited for performances in 2016, in the wake of the smash hit Mama Mia, a stage and film jukebox musical featuring their songs. They announced that year that they were working on new music, and a new “digital entertainment experience” featuring “ABBAtars” of the band – digital avatars of the group which would look like their 1970s selves, and which would somehow appear in concert. Two announced singles, and the ABBAtar experience, were delayed multiple times, but in August 2021 they announced Voyage, their first new album since 1981’s The Visitors. The album was released on September 2, 2021, and pictures of the band in motion capture suits – the lycra numbers with little ping-pong balls attached – accompanied many articles and made the rounds on Twitter. (Here’s the BBC one.)
  • Ponder and Ridcully argue about evolution in The Last Continent and The Science of Discworld, and to be fair, evolution only seems to work on the Disc on one island in its distant past, where is it the work of the God of Evolution. (See #Pratchat29 for our discussion of that!)
  • When Liz says “We’ve gotta Back to the Future this“, she is specifically speaking of the scenario in Back to the Future: Part II, where Marty’s carelessness allows villain Biff Tannen to go back in time and give his young self a book containing future sports results, allowing him to take over the town and run a hugely successful (and, it’s implied, criminal) business empire out of a casino. Marty and Doc have to go back in time and set history on its proper course.
  • Thief of Time (to be discussed in #Pratchat48) was published on the 1st of May, 2001 – a year and a day before The Science of Discworld II! It wasn’t the most recent Discworld book at the time of the latter’s release: in between, Pratchett published The Last Hero (a large-format illustrated book, published in October 2001) and The Amazing Maurice and His Educated Rodents (the first younger readers Discworld novel, published in November 2001; see #Pratchat33). But Thief of Time was the most recent “regular Discworld novel for adults”, and in fact its first paperback edition was published one year after the original hardcover – the day before The Science of Discworld II.
  • Night Watch is the twenty-ninth Discworld book, and the sixth of the eight City Watch books. It remains one of the most popular of the entire series. Our current plan is to discuss it for #Pratchat50 – unless you have a better idea!
  • Liz’s speech referencing free will (or the lack of it) was given at the last Sci-Fight she participated in, on the 20th of May, 2021. The topic was “Scientists Go to Heaven”, and Liz was (perhaps surprisingly) on the affirmative team.
  • Liz has said “Time is a flat circle” on a number of occasions, beginning way back in #Pratchat5; this is Ben’s first time. It refers to the idea of “eternal return” – i.e. that time repeats itself – and is specifically a reference to the first season of the television series True Detective.
  • Loki is a Disney+ series and part of the Marvel Cinematic Universe. In the series, a version of the trickster god Loki – as seen in the films Thor, The Avengers and others – is lifted from existence when he becomes a “variant” – a version of someone who strays from the single set of events enforced as the “sacred timeline” by a mysterious organisation known as the Time Variance Authority.
  • “A Bathing Ape” – or BAPE for short – is a fashion brand from Japan founded in 1993, now owned by Hong Kong fashion conglomerate I.T Group. You can see the kind of stuff they sell on their website.
  • The aquatic ape hypothesis is, at best, highly controversial among anthropologists. It was first suggested by marine biologist Alistair Hardy in 1960, though he described it as a “rough guess” rather than a serious theory, and according to some accounts was mortified at the sensational media attention it received at the time. It was popularised in part by Welsh television writer Elaine Morgan in her 1972 book The Descent of Woman, which challenged the highly gendered stories of human evolution – in particular the focus since the 1950s on early humans hunting and gathering, excluding the previously thought just as important activity of fishing. After receiving general acclaim for the book but criticism for the aquatic ape portion, she later published an entire book devoted to the idea, 1982’s The Aquatic Ape. The theory has been defended by many, including philosopher Daniel C Dennett (who has also suggested that both Morgan and her opponents go too far) and David Attenborough. The later seafood theory of human brains, espoused by Michael Crawford and David Marsh in their 1989 book The Driving Force: Food, Evolution and The Future (as mentioned in Chapter 8, “Planet of the Apes”), was not taken especially seriously either. All that said, there’s always room to challenge the status quo, especially if the dominant stories it supports seem to suspiciously uphold modern ideas about gender roles. So far, though, the fossil record doesn’t support the idea that early humans spent most of their time on the beach, so at best, the jury is still out.
  • It’s worth noting that the updated 2002 edition of the first The Science of Discworld also talks about the aquatic ape hypothesis and the importance of seafood in brain development – and goes another step further. In chapter 42, “Anthill Inside”, they mention that the savanna hypothesis is also in trouble from evidence that some areas where early human fossils are found weren’t savanna back when those humans died – they were woodlands. This is an ongoing question, and the savanna hypothesis – while still the dominant idea in the public consciousness – is described as controversial by some palaeoanthropologists and palaeobotanists, with interpretation of the habitat at that time seemingly still a bit in question.
  • The so-called “paleo diet” – short for palaeolithic diet – is, like most diets, a fad, in this case supposedly emulating the diet of our palaeolithic ancestors. Though versions of the idea go back at least as far as 1890s, gastroenterologist Walter L. Voegtlin really made it popular with his 1975 book The Stone Age Diet, which claimed humans ate very little other than meat up until 10,000 years ago and recommended modern humans do the same. It saw a revival at the start of the 21st century – when The Science of Discworld II was published – and the new name was seized by health scientist Loren Cordain with her 2002 book The Paleo Diet. (She also owns the copyright on that name.) While some of the recommendations of the diet probably are good for you, there’s not much in the way of proper research into the amazing health benefits Cordain and other proponents claim – and, for that matter, there’s not that much detail available about what our ancestors actually ate, either.
  • Neanderthals were a sister species to (or perhaps a subspecies of) modern humans; they are given the name Homo neanderthalis (or Homo sapiens neanderthalis if you think of us as Homo sapiens sapiens). They are named after the Neandertal valley in Germany, where their first fossils were found, and lived mostly in Europe until around 40,000 years ago. In the last few years, evidence has been found in Spain that Neanderthals – who lived there before modern humans – made forms of cave art, suggesting they may have been more sophisticated than the unflattering ideas given of them via the “Ugs” in Science of Discworld II.
  • Tool use in animals has been observed in many species, including monkeys, dolphins, birds (especially crows), and yes, octopuses. There’s some debate about what counts as a “tool”, but some animals do modify objects they find in the environment to suit their purposes; this includes crows and octopuses.
  • Octopuses can indeed get out of jars, as evidenced by this viral video from 2010 which did another round of the Internet in 2014. Though it should be noted that while the octopus does unscrew the lid from inside the jar, she seems perfectly happy to stay inside it.
  • We haven’t yet found a good source for the idea of fish returning to the location of their ancestors every four generations, but don’t confuse it with the four-generation cycle of history, which is another name for Strauss–Howe generational theory.
  • Robust and gracile are terms mostly used to describe two broad groups of species of our ancestor genus Australopithecus. While the concept does appear more broadly in biology, it seems much less common.
  • The three kinds of elephant are the African bush elephant, the African forest elephant, and the Asian elephant (referred to in the book as the Indian elephant). Genetic analysis suggests that the two African elephant species diverged more than 2.5 million years ago – the same kind of timeframe as the divergence between woolly mammoths and Asian elephants.
  • Let’s talk about that claim about the huge number of illegitimate children. In chapter 12, “Edge People”, Jack and Ian say “In English society, about one child in seven” are in the position that their “legal and biological parentage differ”. This is based on Elliott Philipp’s analysis of blood groups in the late 1960s, published in 1973. Blood typing was the standard form of paternity testing before DNA fingerprinting techniques were refined in 1980s, and it is pretty good at determining that someone can’t be someone’s parent – you have to get the genes for your blood type from your parents, after all. Unfortunately we have no way of checking these numbers because we can’t find the study, or any writing about it (or similar ones in the United States, for that matter). It doesn’t instil us with confidence that the book’s authors seem to have misspelled the author of the study’s name – they name “Elliott Philipp”, who we think is probably Elliot Elias Philipp (1915 – 2010), a gynaecologist and obstetrician from Stoke Newington in London, though his official biography doesn’t mention this study. In any case, the figure of “one in ten” is popularly accepted, and was the result of the surveys they cite, but they correct for the fact that an unknown father has a reasonable chance of having the same blood type as the supposed father, leading to their figure of 13-17%, or roughly one in seven. There are other figures; while there’s not as much literature about this as you might expect – or at least not any that’s easily accessible to a lay researcher – we found that a study by University of Leicester in 2009 using a survey of genetic markers in nearly 1,700 British men suggested the real figure is probably closer to one in twenty-five. Here’s a BBC article from the time – note that the Leicester researchers don’t seem to be aware (or at least, don’t mention) Philipp’s study as a possible source of the one-in-ten assumption.
  • Mitochondria are the “organelles” responsible for most of the generation of Adenosine triphosphate (ATP), the main source of chemical energy in cells. They are found in most cells of eukaryotic lifeforms on Earth. (An organelle is a distinct sub-structure that fulfils a specific function – so the cellular equivalent of an organ in the body.) The dominant theory is that they were once separate single-celled organisms that were absorbed and incorporated into the body of our single-celled ancestors millions of years ago. Supporting this is the fact that mitochondria have their own DNA. It’s been long thought that children only inherit the mitochondrial DNA (mtDNA) of their mothers, hence the idea of “mitochondrial Eve” – the woman from whom all modern humans inherited their mitochondria. As the book points out, this doesn’t mean there was only one woman, only the others alive at the time do not have any surviving direct female-line descendants (they could have direct descendants, but if they or their following generations only had male children, then they would have inherited another line’s mtDNA). And, as modern lines end – i.e. as women now live and have no daughters – the specific woman in question would change. More recent genetic studies from 2013 have suggested the most recent mitochondrial Eve would have lived around 155,000 years ago, about twice as far back as the estimate current at the time of The Science of Discworld II. Of note is that since at least 2018, researchers have discovered that humans can inherit some of their mtDNA from their fathers, though this seems very rare and doesn’t seem to have left a significant mark on the human genetic map.
  • The Richard Dawkins book Ben mentions is The River Out of Africa, which uses the metaphor of a river to represent the flow of humans – or at least human DNA – out of Africa and across the world.
  • The Biblical story discussed in the book, in which the Israelites agree to let the Hivites join their tribe if they get circumcised but then murder them all, is the story of Dinah and Schechem, from the book of Genesis, chapter 34.
  • The early version of “Sleeping Beauty” to which Liz alludes is known from its earliest written version, “Sun, Moon, and Talia”, by Italian author Giambattista Basile in his 1634 book, the Pentamerone. Rather than being waken by a handsome Prince, the magically cursed princess Talia is discovered by a king, who…look, we’ll let you look it up. It’s not okay.
  • Cinderella’s slippers might be described as being made of “fur” in earlier versions, but this doesn’t seem to be an allusion to what Jack and Ian are talking about. Rather “squirrel fur” was one of a number of luxury materials that a common would never be able to afford or allowed by the conventions of status to wear. Many sources we found about this debunk the idea that it’s a mistranslation of an earlier version. The famous source of the modern version, Charles Perrault’s “Cendrillon ou la petite pantoufle de verre” (“Cinderella; or, the Little Glass Slipper”) uses the unambiguous phrase “pantoufles de verre” (“glass slippers”) many times. We will also note that Ben is wrong about the story always being about shoes – sometimes the item that helps identify the mystery woman is a ring. The earliest written version, in Chinese, does feature gold shoes.
  • The name Rumpelstiltskin actually derives from the German name Rumpelstilzchen. As Ben mentions, this is the name of a type of goblin – a noisy one who walks with a limp, in fact – and loosely translates as “little rattle stilt”. It seems to come from the old German children’s game, Rumpele stilt oder der Poppart, which one source described as “like duck-duck-goose except instead of a goose there’s a goblin, and instead of a duck there’s a man with a limp”. The goblin player would rattle and bang on things. (Sadly it seems others also think there’s a phallic interpretation for the story, though it doesn’t seem to be an explicit part of the tale in any version we can find.)
  • Ilona and Peter Opie published many books; the ones relevant to this discussion are 1959’s The Lore and Language of Schoolchildren, and 1974’s The Classic Fairy Tales, which contained twenty-four stories as they first appeared in English, with a literary history.
  • We’ve mentioned the various folk tale indices in our show notes on previous occasions; the big one Ben usually refers to is the Aarne–Thompson–Uther Index (ATU Index), though there are others. Like the Dewey Decimal System, the idea is that stories with closer numbers are more similar, or at least share significant traits. Both Rumpelstlitskin and Cinderella are in the 500s, the grouping known as “Supernatural helpers”. Rumpelstiltskin is the main example of ATU type 500, and Cinderella is the “persecuted heroine” subtype of 510A, “Cinderella and Cap o’ Rushes”.
  • The high school physics experiment Ben mentions is still done in high schools today. It uses a “ticker timer”, which is basically an electromagnet which, when attached to an AC power supply, turns on and off, causing a metal strip with a point on it to vibrate up and down at a fixed speed. It has a bit of carbon paper under the metal strip, so when the strip moves down it will make a mark with the carbon on paper underneath. In the experiment, you feed a strip of ticker tape through some guiding holes under the metal strip; by attaching one end of the tape to a block of wood with wheels on it, it can be dragged through, and by measuring the distance between the dots on the tape you can measure the speed at which the truck is moving. Ben was happy to discover that searching for “ticker timer” on YouTube brought up a number of high school physics teachers (many of them in Australia) explaining the demonstration to their students – some of them even from the Before Times!
  • The horse galloping photography experiment was to determine whether a horse always has one foot on the ground when trotting. It was undertaken by famous American photographer Eadweard Muybridge for Leland Stanford, former Governor of California, as mentioned in the book in chapter twenty-two, “The New Narrativium”. While the story of this settling a substantial bet is popular, some historians say there’s no evidence it’s true. The two men later had a falling out when Stanford published a book about horse movement containing illustrations based on Muybridge’s photographs but giving him no credit, costing Muybridge some research funding.
  • Rincewind’s deep love (or indeed lust) for potatoes was first explored while he was marooned on an island at the beginning of Interesting Times.
  • We’ve previously mentioned Jasper Fforde in #Pratchat25 (Equal Rites), #Pratchat31 (The Long Earth) and #Pratchat35 (The Science of Discworld), as well as the second episode of our subscriber bonus podcast, Ook Club. Thursday Next is the star of his most famous series of novels, beginning with The Eyre Affair; she works for the Special Operations Network department 27 ((or SpecOps, or specifically SO-27, for short), the Literary Detectives or “LiteraTecs”. Not only is literature incredibly important in her alternate history 1985 – “WillSpeak” machines are common coin-operated vending machines which recite lines from his plays and poems – but the lines between fiction and reality are very thin, allowing her to pass into the “BookWorld” and enter the plots of well-known novels. Her father has long since disappeared, but he worked for SO-12, the ChronoGuard, tasked with protecting the timeline from paradoxes and other tampering. As a result, Shakespeare and time travel are at least minor elements (an often much more significant ones) in most of the Thursday Next novels.
  • Liz claims no-one knows when Shakespeare was born, or what his life was like, or who he was…some of which is true. We don’t know when he was born, but we do know he was baptised on the 26th of April, 1564; his birthday is usually celebrated on April 23, which is also the date on which he died in 1616, aged 52. We also known he was married to Anne Hathaway on the 27th of November 1582, but there’s little detail recorded of his life until he begins to make his mark on the theatre scene in 1592, when he was roasted in print by rival playwright Robert Greene. As to his identity, while no end of scholars have made themselves famous with alternative theories about his identity and very existence, at least half of the Pratchat team subscribes to the simplest theory: that he was just one guy, named William Shakespeare.
  • Doctor Who featured Shakespeare in the 2007 episode “The Shakespeare Code”, when the Tenth Doctor and his companion Martha Jones visit the Globe to see an original Shakespeare production and discover alien witches are influencing both Shakespeare’s play and the Globe theatre for their own ends. Doctor Who had mentioned Shakespeare several times in the classic series, implying (but never showing) that the Doctor had met him on more than one occasion.
  • Ben makes an unintentional pun when he says that “Shakespeare is kind of your biggest Touchstone” – Touchstone is the name of a fool, one of the major characters in Shakespeare’s comedy As You Like It.
  • The author who suggested Western-style science requires monotheism, which is why it didn’t develop in China was British biochemist, historian and sinologist Joseph Needham (1900-1995). A noted scholar of Chinese history and philosophy of science, he wrote many books, but Jack and Ian specifically mention “his truly gigantic History of Science in China“. His work was so influential that in history circles, the question of why China had been overtaken by the West in scientific terms, despite being centuries ahead with many of the most important inventions, is known as “the Needham Question”. Needham has been criticised for being perhaps biased in China’s favour, however, and there are many other hypotheses that have been put forward to answer the Needham Question.
  • We hope you enjoy the seeming non-sequitur when Liz says “On the space elevator, on the way to the banana planet“; this is a result of a previous bit where Ben gave an entirely incorrect (and thus cut) account of how banana plants move up hills, and Liz deciding that when they get to the top they build a space elevator and leave the planet.
  • The Milgram experiment, conducted by Yale University psychologist Dr Stanley Milgram in 1961 and published in The Journal of Abnormal and Social Psychology as “Behavioural study of obedience” in 1963, remains one of the most famous psychology experiments of all time. As the subjects were filmed – and that footage used by Milgram to capitalise on his fame by using it in a 1974 film titled Obedience – it has been shown to students of psychology and the history and philosophy of science for decades. But like many similar experiments from the time, it has since come under a great deal of scrutiny. In 2013, Australian psychologist Gina Perry published Behind the Shock Machine: The Untold Story of the Notorious Milgram Psychology Experiments; with access to all Milgram’s original papers and documentation, she felt that his methodology and the the quality of the experiment was highly questionable. Even those who think the experiment holds up – and it has, despite ethical objections, been repeated in various forms, even as recently as 2007 – many others question the conclusions that have been drawn from the results. This great piece by Cari Romm for The Atlantic from 2015 is a great primer on the legacy of the experiment, and more recent criticism.
  • As Ben mentions, if you’re a subscriber, keep an eye out for the next episode of the Ook Club bonus podcast – he has a few more things to say about this book!
  • The expression Bojack Horseman has ruined for Liz is “Fool me once, shame on you; fool me twice, shame on me.” Many sources trace its origin back to a version found in The Court and Character of King James, written by Anthony Weldon in 1650, though some suggest a similar sentiment appears in “The Embassy to Achilles” in Homer’s The Iliad – or at least its English translation by Alexander Pope, published between 1715 and 1720. (Having had a look, that latter attribution seems a bit of a long bow.) Bojack Horseman is a Netflix original animated series about depressed and self-hating anthropomorphic horse actor Bojack Horseman. In the first season’s fourth episode, a number of characters are unable to recall the expression correctly. This echoes former US President George W Bush, famous for his “Bushisms”, who also mangled it; here’s a little collection of his gaffes that includes that one, from a speech given on September 17, 2002 in Nashville.

#Pratchat47 – A Finite Number of Shakespeares

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Science comedian and public health nerd Alanta Colley joins Liz and Ben on their second trip through Discworld into Roundworld, as they join Rincewind and the wizards of Unseen University in Pratchett’s second collaboration with Ian Stewart and Jack Cohen: 2002’s The Science of Discworld II: The Globe.

While on a team-building exercise in the woods near Unseen University, Archchancellor Mustrum Ridcully and his faculty are accidentally swept along when something makes its way through the Discworld into Roundworld. That something turns out to be elves – nasty, parasitic lifeforms who feast on the imagination and emotions of others. Roundworld – the universe in a bottle created by the wizards’ experiments, which somehow runs without any magic – has been altered by their presence. Now the wizards – including Rincewind, the long-suffering Egregious Professor of Cruel and Unusual Geography – have to find a way to get rid of them without dooming the local human population in the process…

Having entirely missed humankind in The Science of Discworld, the wizards are back for another go! And so are science writers Ian Stewart and Jack Cohen – but this time, they don’t want to explain cosmology, basic physics and the history of the Earth, but instead sell you on the idea that storytelling is the essential ingredient that makes humans…human.

Are we really Pans narrans, the storytelling chimpanzee, rather than Homo sapiens, the “wise man”? Is it wise to write a popular science book with an author who will guarantee the book will be read again twenty years later – and to include some “cutting edge” science, no less? What do a debunked psychological experiment, the term “overcommitment”, and filthy explanations of fairytales have to do with it? And who’s this shrewd and world-wise street wizard named Rincewind, and can we have some more of his adventures please? Let us know what you think using the hashtag #Pratchat47 on social media, and join in the conversation!

Podcast: Play in new window | Download (Duration: 2:11:42 — 60.6MB)

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Guest Alanta Colley is a comedian, science communicator and storyteller whose solo shows include Parasites Lost (about parasites), Days of Our Hives (about beekeeping) and The Origin of Faeces (you can probably work that one out yourself). She also wrote and performed the “comedy experiment” You Chose Poorly with our own Ben McKenzie. Since 2017 Alanta has also been the host and producer of Sci Fight, a series of comedy science debates; both Ben and Liz have been guest speakers, along with previous Pratchat guests Anna Ahveninen (#Pratchat35) and Nicholas J Johnson (#Pratchat38). You can hear Ben and Anna’s last appearance on Sci Fight in this episode of the Climactic podcast, or see the first online debate for Melbourne Science Gallery on YouTube here. Visit scifight.com.au to sign up to the mailing list, and you can find Alanta as @lannyopolis on Twitter and Instagram, via Facebook or at alantacolley.com.

You can find out more about what Liz has been writing by following her as @ElizabethFlux on Twitter or Instagram.

As usual, you can find notes and errata for this episode on our web site.

Next episode we read one of the few precious Discworld novels left to us, though luckily we got a little preview this time around; yes, we’re joining up with Susan, Death and the history monks for the very timely Thief of Time, which we’ll be discussing with journalist Ben Riley! Send us your questions using the hashtag #Pratchat48, or get them in via email: chat@pratchatpodcast.com

Want to make sure we get through every Pratchett book? You can support Pratchat for as little as $2 a month and get access to bonus stuff, including the exclusive supporter podcast Ook Club! Click here to find out more.

#Pratchat29 – Great Rimward Land

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In episode 29, Liz, Ben and guest Fury join Rincewind on a journey to a strangely familiar land in Pratchett’s 1992 loving Discworld parody of Australia, The Last Continent. (A quick content note: this one has more swearing than usual, but we bleeped the c-bombs out.)

The Librarian of Unseen University, long ago turned into an orang utan, is suffering from a magical illness. Archchancellor Ridcully and his faculty could help him – if only they knew his original human name. Unfortunately the only person likely to remember is former Assistant Librarian Rincewind, and the wizards sent him to Agatea – and then accidentally propelled him across the Disc. He ended up in XXXX – aka Fourecks, aka the Last Continent, aka “that place far away full of deadly animals” – but he’s managed to survive. The locals out in the desert seem friendly enough, at least until he asks when it will rain. But something isn’t right. The land needs a hero. What it’s got is the Eternal Coward…

Pratchett came to Australia many times, and his experience of the country seems to have rubbed off. Fourecks affectionately parodies Australian music, slang, politics and culture, including Mad Max, The Man From Snowy River, Priscilla Queen of the Desert, thongs, corks on hats, the cultural cringe, Vegemite, pie floaters and Skippy the Bush Kangaroo. It’s quite the ride for the Australian reader… Rincewind is moulded into the stereotypical “bush hero”, but his touchstones aren’t entirely post-invasion – Pratchett also tries for a nuanced and deep Discworld interpretation of Aboriginal culture and beliefs, even if he doesn’t include any actual Aboriginal characters. Do you think he makes it work? Could you follow all the Australian references? Is there enough of a plot, or is it just an excuse for a bunch of jokes? Use the hashtag #Pratchat29 on social media to join the conversation!

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Guest Fury is a writer, illustrator and performer who previously appeared on Pratchat in episode 19, discussing Soul Music. They were recently seen in Gender Euphoria, a touring multi-disciplinary show celebrating trans experiences which has played in Melbourne and Sydney. Fury’s book I Don’t Understand How Emotions Work is available online now. You can also find out more about them at their web site furywrites.com, or follow them on Twitter as @fury_writes.

Next month’s episode was going to cover Pratchett’s 2012 sci-fi collaboration with Stephen Baxter, The Long Earth, but we’ve had a change of plan! Instead, we’ll be taking a month off from book discussion to answer your questions about how to get into Pratchett, about past episodes, and about his work in general. Listen out for a special announcement with more information, and get your questions in via the hashtag #Pratchat30 by April 3rd.

You’ll find the full notes and errata for this episode on our web site.

Want to make sure we get through every Pratchett book? You can support Pratchat for as little as $2 a month and get access to bonus stuff, including the exclusive supporter podcast Ook Club! Click here to find out more.

#Pratchat26 – The Long Dark Mr Teatime of the Soul

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In episode 26, Michael Williams of The Wheeler Centre joins Liz and Ben to get into the holiday spirit with the very Christmassy 1996 Discworld novel Hogfather.

It’s Hogswatch, and the Assassins Guild of Ankh-Morpork has accepted a very unusual assignment, and Lord Downey has given it to the very unusual assassin Mr Teatime. But who would want to kill the Hogfather? And how would you even accomplish such a thing? As Death fills in for the Fat Man delivering presents, his granddaughter Susan is reluctantly drawn to investigate, teaming up with the newly created Oh God of Hangovers. But much more than the joy of children is at stake – for without the Hogfather, will the sun even rise tomorrow?

Hogfather brings to life a character previously mentioned only in passing rather paradoxically by replacing him with Death, who gets a sort of working holiday. It’s our second and final adventure with Susan, and the wizards get heavily involved – as does their arcane thinking machine Hex. It’s full of not-quite-Christmas cheer, black humour, true pathos and a pure expression of many of Terry’s most deeply held beliefs. Could this be the ultimate story of Christmas? Do its themes of belief and justice hit the mark? And what kind of creature would you call into existence if there were excess belief sloshing around? Use the hashtag #Pratchat26 on social media to join the conversation and have your say!

Podcast: Play in new window | Download (Duration: 2:10:39 — 60.2MB)

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Guest Michael Williams is the Director of the Wheeler Centre for Books, Writing and Ideas in Melbourne. They have a year-round program of talks, interviews, panel discussions, podcasts and writing. Find out more about what’s happening at @wheelercentre on Twitter and Instagram, or check out videos of past talks on YouTube. You’ll find all the Wheeler Centre’s upcoming events at wheelercentre.com, as well as a collection of Michael’s writings and events. You can also find Michael on Twitter at @mmccwill.

The Sci-Fight comedy debate over the topic “Santa is Real” features a great line-up of comedians and scientists, including previous Pratchat guest Nate Byrne (episode 24). It’s on at Howler in Brunswick on Thursday December 12, 2019. Details and tickets via scifight.com.au.

Next month we continue through the Discworld with 1997’s Jingo, a tale of nationalism, war, racism and greed, which also has a submarine in it. We’ll be recording in the week or so before Hogswa- er, Christmas, so get your questions in via social media using the hashtag #Pratchat27.

You’ll find the full notes and errata for this episode on our web site.

Want to make sure we get through every Pratchett book? You can support Pratchat for as little as $2 a month and get access to bonus stuff, including the exclusive supporter podcast Ook Club! Click here to find out more.

#Pratchat19 – It Don’t Mean a Thing if it Ain’t Got Rocks In

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In our nineteenth episode it’s back to the Discworld as we join Death, and meet his granddaughter Susan, as writer and illustrator Fury joins us to talk about the 1994 Discworld novel, Soul Music!

Susan Sto Helit doesn’t have time for anything silly – not for grief, not for tiny skeletal rats who are here to inform her of SQUEAK, and most definitely not for this new craze sweeping the disc. But music with rocks in has other ideas, and doesn’t care who gets swept up in the swell. With her long lost grandfather (the one with the bony knees) missing in action, Susan has no choice but to take on the family business and try not to….erm…rock the boat.

Pratchett is never one to shy away from the big themes and Soul Music packs a lot of punch into a deceptively simple plot. Exploring the complexities of grief, and the idea that family is more than just genetics, the 16th Discworld continues the story from where Mort left off, and introduces us to some new (sadly one-off) names that we quickly grow to love. Packed with more music references and jokes than one could shake a stick with bells at, this is one that was Imp-possible to put down. Got a favourite Discworld band name? Or an idea as good as My Little Binky? We’d love to hear from you! Use the hashtag #Pratchat19 on social media to join the conversation.

Podcast: Play in new window | Download (Duration: 2:14:40 — 62.0MB)

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Guest Fury is a writer and author based in Naarm/Melbourne. Their book, an experimental graphic novel memoir titled I Don’t Understand How Emotions Work, is available here.

You’ll find the full show notes and errata for this episode on our web site.

As mentioned this episode, keep an ear out for our first live show, recorded at Nullus Anxietas VII, where we discuss the short story Troll Bridge with author Tansy Rayner-Roberts! It’ll show up in the podcast stream soon.

Next month we head to the skies and cling on for dear life as we finish the Bromeliad trilogy with Wings! Get your questions in via social media using the hashtag #Pratchat20.

Want to make sure we get through every Pratchett book? You can support Pratchat for as little as $2 a month and get access to bonus stuff, including the exclusive supporter podcast Ook Club! Click here to find out more.