pplpod

Got something to say to this podcast? Send a voicemail, and you might hear yourself on the next episode!

Decide to raise your hand and it moves. But what actually made that happen: a burst of electricity in the brain, or an immaterial you pulling the levers? This episode traces the mind-body problem from the ancient Greeks through Plato's strict separation of soul and body, Aristotle's hylomorphism, Aquinas' adaptation of it into Christian theology, and Descartes' 1641 split between thinking substance and extended substance. Along the way it covers the modal and indivisibility arguments, the pineal gland, and the causal interaction problem that still haunts dualism today.

The conversation then examines the elaborate workarounds invented to keep dualism alive, including epiphenomenalism, Malebranche's occasionalism, and Leibniz's parallelism, before turning to modern defenses like Nagel's bat, Jackson's Mary's Room, Chalmers' philosophical zombies, and Swinburne's split-brain transplant. On the other side, physicists invoke conservation of energy, Churchland's brain-damage argument challenges the ghost in the machine, and fMRI studies detect decisions up to ten seconds before conscious awareness. The episode closes with why the debate matters for pain management, epilepsy stigma, and the developmental psychology suggesting humans are wired for dualism from birth.

• How Plato, Aristotle, and Aquinas each drew the line between soul and body, and why Aquinas thought a separated soul is not a complete person
• Descartes' modal and indivisibility arguments, the pineal gland theory, and why the causal interaction problem remains dualism's biggest headache
• Occasionalism, parallelism, and epiphenomenalism as attempts to explain how a weightless thought could move a physical neuron
• Qualia, Mary's Room, p-zombies, and the split-brain thought experiment as modern arguments that physical facts are not the only facts
• The physicalist counterattack: conservation of energy, brain damage, Hasker's magnet analogy, fMRI prediction studies, and the real-world stakes for medicine and stigma

Got something to say to this podcast? Send a voicemail, and you might hear yourself on the next episode!

In the year 1400, a 68-year-old scholar was lowered by ropes down the walls of besieged Damascus to meet the conqueror Timur face to face, not to beg for his life but to study the living proof of his theory. This deep dive follows Ibn Khaldun from a privileged childhood in Tunis, through the Black Death that killed his parents and teachers, into decades of political scheming, prison, exile, and diplomacy across North Africa and Spain.

We explore the three years of isolation in an Algerian fortress where he wrote the Muqaddimah, his concept of asabiyah or group solidarity, and his cyclical theory of how tough nomadic conquerors become the soft, heavily taxed elites who are overthrown in turn. We also cover his analysis of the division of labor and taxation centuries before Adam Smith and the Laffer curve, the shipwreck that killed his entire family, his weeks in Timur's camp, and the long delayed recognition of his work by Ottoman historians and even Ronald Reagan.

• How the Black Death and family legacy pushed a young scholar into politics
• Asabiyah and the rise-and-fall cycle of dynasties compared to startups and legacy corporations
• The bread example and Ibn Khaldun's early theory of the division of labor
• Why low taxes yield more revenue early in a dynasty and high taxes crush it later
• The Damascus siege, intelligence reports for Timur, and a warning sent to Morocco

Got something to say to this podcast? Send a voicemail, and you might hear yourself on the next episode!

There is an observable six-step framework that strategists use to take an idea considered completely unthinkable today and turn it into everyday government policy. This deep dive explores the Overton Window, developed in the early 1990s by Joseph Overton of the Mackinac Center for Public Policy, and his thesis that a politician's viability depends not on personal conviction but on whether an idea falls within a narrow range of public acceptability, plotted on a vertical axis from more free to less free.

We walk through Joshua Trevino's six degrees of acceptance using the history of the eight-hour workday, explain the door-in-the-face technique of floating unthinkable proposals to normalize radical ones, and examine Joseph Lehman's claim that lawmakers only detect the window rather than move it. We also look at the framework's surprising use in neonatal medical ethics, where the resuscitation of 22-week premature infants moved from unthinkable to standard policy.

• Why Overton used a vertical axis of government intervention instead of left versus right
• Unthinkable, radical, acceptable, sensible, popular, policy: the six stages explained
• How the 40-hour workweek traveled from anarchist plot to the Fair Labor Standards Act
• Politicians as surfers who ride cultural waves rather than create them
• The neonatology example and how the window shifts inside our own minds

Got something to say to this podcast? Send a voicemail, and you might hear yourself on the next episode!

This statement is false. Four familiar words expose a mechanical glitch in human logic that thinkers have wrestled with for thousands of years. This deep dive explains why the famous claim by Epimenides the Cretan is not actually a paradox, how Eubulides of Miletus isolated the inescapable version, and how scholars across Christian, Indian, and Islamic traditions independently identified self-reference as the root of the problem.

We then examine the major attempted patches: rejecting bivalence and the strengthened liar that turns that escape hatch into a revolving door, fuzzy logic's 0.5 truth value, Arthur Prior's hidden assertion, Tarski's hierarchy of languages, Kripke's groundedness and the Smith and Jones example, and Graham Priest's dialetheism with its paraconsistent logics. Finally we show how Kurt Godel used Godel numbering to inject the liar paradox into arithmetic and prove that any consistent formal system capable of basic arithmetic must be incomplete.

• Why all Cretans are liars resolves as a falsehood rather than a true paradox
• Multi-sentence and future-contingent variants that trap you without the word this
• The principle of explosion and how one contradiction proves the moon is cheese
• Tarski's meta-language hierarchy versus Kripke's real-world groundedness
• Godel's first incompleteness theorem and what it means for artificial intelligence

Got something to say to this podcast? Send a voicemail, and you might hear yourself on the next episode!

What is the sound of one hand clapping? Most people assume Zen koans are mystical nonsense designed to scramble the brain, but the historical record tells a very different story. This deep dive traces the word koan back to the Chinese gong'an, a Tang dynasty legal term for a magistrate's desk and public precedent, and explains why early Chan Buddhists treated encounters between masters and students like case law demanding a correct, demonstrable response.

We follow the koan's transformation into a sophisticated literary game among Song dynasty intellectuals, the dramatic moment when master Dahui burned the printing blocks of the Blue Cliff Record, and his invention of the word-head practice focused on the single word mu. We then examine how Japanese Rinzai Zen codified the practice into a rigid curriculum with secret answer manuals and capping phrases, and how reformers like Bankei, Dogen, and the Korean master Daehaeng rejected the system in favor of everyday life as the fundamental koan.

• Non-duality and what Hakuin's one hand is actually pointing at
• Why Dahui destroyed a famous koan collection and engineered the great doubt
• The red-hot iron ball metaphor and the psychology of shattering the rational mind
• Secret manuals, checking questions, and the academic critique of koans as gatekeeping
• Bankei's old waste paper, Alan Watts's lead shoes, and Dogen's genjo koan

Got something to say to this podcast? Send a voicemail, and you might hear yourself on the next episode!

In 1972 St. Louis dynamited the Pruitt-Igoe housing project, and some cultural historians mark that moment as the beginning of the end for objective truth. This deep dive untangles postmodernism, a word applied to confusing films, asymmetrical couches, and the feeling that the news is no longer real. We start with what modernism was, why less is more gave way to less is a bore, and how architects began mashing up history in buildings like London's MI6 headquarters.

From there we move into the French theorists: Lyotard's death of the grand narrative, Derrida's deconstruction of unstable language, and Baudrillard's hyperreality, illustrated through social media face filters. We cover the science wars and the Sokal hoax, Fredric Jameson's critique of postmodernism as a symptom of late capitalism, pastiche in Blade Runner and the Judson Dance Theater, and the debate over whether we have entered a more sincere metamodern era or simply live inside postmodernism every time we open our phones.

• Why the utopian modernist design of Pruitt-Igoe failed the people living in it
• Metanarratives, little t truths, and the 20th-century horrors that discredited grand stories
• Deconstruction and hyperreality explained through everyday examples
• The Sokal hoax and the question of how to build a bridge without universal truth
• Parody versus pastiche, and the Madonna to Taylor Swift shift toward sincerity

Got something to say to this podcast? Send a voicemail, and you might hear yourself on the next episode!

In 2005, a 24-year-old physics graduate named Bobby Henderson wrote a sarcastic open letter to the Kansas State Board of Education demanding equal classroom time for a creator made of pasta and meatballs. This deep dive explores how that protest against teaching intelligent design exploited the deliberate vagueness of an unnamed designer, went viral with tens of millions of hits and over 60,000 emails, and became The Gospel of the Flying Spaghetti Monster.

We unpack the satirical lore, from a creator who was drinking heavily to pirates as the original prophets and a graph linking global warming to declining pirate numbers, and show how each element targets a real fallacy or theological argument. We then follow Pastafarianism into the real world: the Polk County, Florida school board fight, Niko Alm's three-year battle to wear a colander in his Austrian driver's license photo, and court rulings from New Zealand to Nebraska that tested how governments define religion.

• The Kansas 2005 hearings and the legal loophole Henderson turned into a Trojan horse
• The drunk creator, beer volcano, and ramen fasting as targeted theological parody
• The pirate graph as a lesson in correlation versus causation
• Russell's teapot, unfalsifiability, and the burden of proof in science
• Colander photos, marriage celebrants, and courts forced to define a true religion

Got something to say to this podcast? Send a voicemail, and you might hear yourself on the next episode!

A seasick dropout from an Amazon expedition, a failed painter, tone deaf, chronically ill, and so depressed he contemplated suicide for months. That was the young William James, who went on to become the father of American psychology. This deep dive follows his privileged but pressured upbringing, his father's push toward medicine, the mysterious ailments diagnosed as neurasthenia, and the 1870 breakthrough when he wrote that his first act of free will would be to believe in free will.

We explore his founding of the first experimental psychology course in the United States, the 12-year effort behind The Principles of Psychology, the James-Lange theory that we feel afraid because we run, and his model of the divided self. We then move into pragmatism, the squirrel debate, the cash value of ideas and the relativism critique, and his radical empiricism that led him to study mystical experience, nitrous oxide, and the medium Leonora Piper.

• How James engineered his own recovery through a deliberate belief in free will
• The regret argument against determinism and the two-stage model of chance and choice
• The bear in the woods and why the body leads while the feeling follows
• The material, social, and spiritual selves versus the observing I
• The Varieties of Religious Experience, the white crow logic, and radical empiricism

Got something to say to this podcast? Send a voicemail, and you might hear yourself on the next episode!

He wrote under more than 170 pen names, was thrown into the Bastille for a joke, saw his books burned by the state, and was denied a Christian burial, only to be enshrined in the Pantheon before a crowd of a million people. This deep dive pieces together the life of Francois-Marie Arouet, better known as Voltaire, from his rebellious youth in absolutist France to his 11 months in a dungeon, the beating ordered by the Chevalier de Rohan, and the exile in England that rewired his worldview.

We follow the lottery scheme that made him independently wealthy, his 16-year intellectual partnership with Emilie du Chatelet at Cirey, the disastrous stay with Frederick the Great, and the strategic estate at Ferney on the French-Swiss border where he wrote Candide. We also examine his campaign for Jean Calas, his rallying cry to crush the infamous thing, the troubling contradictions in his views, and what it means to cultivate our garden today.

• How the Bastille and the Rohan affair turned a playwright into a champion of liberty
• England's constitutional monarchy, religious tolerance, and the Newton apple story he spread
• The mathematical loophole that let Voltaire's syndicate win a government lottery
• Candide as a ferocious attack on Leibniz's philosophy of optimism
• The Jean Calas affair and Voltaire as an early human rights activist

Got something to say to this podcast? Send a voicemail, and you might hear yourself on the next episode!

In 2008 the Boston Celtics chanted an ancient African word before games, a tech entrepreneur named an open source operating system after it, and a decade earlier it was written into South Africa's interim constitution. This deep dive decodes Ubuntu, the Bantu worldview summarized as a person is a person through other people, and traces its roots across the continent under names like Umunthu, Utu, and Botho.

We explore Nelson Mandela's traveler example and Desmond Tutu's description of self-assurance rooted in belonging, the concept of shared subjectivity that answers the charge of identity-erasing collectivism, and Ubuntu's political formalization in Zimbabwe and South Africa's Truth and Reconciliation Commission. We also examine restorative justice mechanisms, the sharp academic critiques of harmony as a possible trap, feminist debates, and modern applications from Ubuntu diplomacy to Doc Rivers' championship Celtics.

• The Zulu maxim behind I am because we are and its Pan-African variations
• Mandela and Tutu on hospitality, enrichment, and not feeling threatened by others
• Restorative justice, compensation before apology, and the clay metaphor for redemption
• The cowboy and horse critique: why harmony does not automatically mean equity
• How Ubuntu shaped state diplomacy, social work, open source software, and the 2008 NBA title