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2:43:09ENGeorges St-Pierre Never Liked FightingGuest Georges St-Pierre · Host Lex FridmanThe two-division UFC champion tells Lex Fridman how he scripted confidence, tested fasting like a lab experiment, and why a single night cannot settle who is best.
4:03:49ENMoney Is an Extension of the Mind: Robert Breedlove on Bitcoin from First PrinciplesGuest Robert Breedlove · Host Lex FridmanLex Fridman and Robert Breedlove start from sovereignty and property, then follow money, inflation, and Bitcoin down to first principles of human action.
3:00:11ENAsk the Right Questions and Every Path Ends on the Middle FingerGuest Ryan Hall · Host Lex FridmanRyan Hall walks Lex Fridman through a finger game that always lands on the middle finger, then treats jiu-jitsu as a problem of systems, beliefs, and first principles.
1:53:41ENSilvio Micali: Money Is a Shared Belief, and a Blockchain Makes It Common KnowledgeGuest Silvio Micali · Host Lex FridmanThe Turing Award cryptographer and Algorand founder tells Lex Fridman why ledgers, lotteries, and one-way functions matter more than mining.
2:17:59ENThe Übermensch Is a Verb, and Violence Comes Factory-InstalledGuest Josh Barnett · Host Lex FridmanJosh Barnett talks with Lex Fridman about Nietzsche, anarchism, catch wrestling, and why the highest moments of his life have all been fights.
2:44:19ENSpeech Was a Bundle, and the Internet Unbundled ItGuest Eric Weinstein · Host Lex FridmanOn his fourth Lex Fridman Podcast appearance, Eric Weinstein talks through digital speech, reputation as a control tool, gauge-theoretic economics, and the unfinished physics he calls geometric unity.
1:39:29ENElectric engines, 20-nanometer cones, and why Natalya Bailey would skip the first thousand on MarsGuest Natalya Bailey · Host Lex FridmanThe Accion Systems founder walks Lex Fridman from ion physics to orbital debris, chip-made thrusters, and the kind of culture that oozes out of a founder.
2:18:26ENThe Dollar Paper Strip That Could Have Turned Covid's CurveGuest Michael Mina · Host Lex FridmanHarvard immunologist Michael Mina tells Lex Fridman why twice-weekly antigen tests could have reversed the pandemic—and why regulation, not manufacturing, blocked them.
2:53:14ENYaron Brook on Ayn Rand: Reason, Selfishness, and a Fading EnlightenmentGuest Yaron Brook · Host Lex FridmanThe Ayn Rand Institute's chairman walks Lex Fridman through Objectivism, from metaphysics and egoism to capitalism, anarchism, and why so many people still roll their eyes at Rand.
4:23:39ENThe Universe's Rule Might Fit on a PostcardGuest Stephen Wolfram · Host Lex FridmanStephen Wolfram tells Lex Fridman how a short computational rule on a hypergraph could generate space, time, relativity, and quantum mechanics.
3:56:24ENThe Tic-Tac Knew We Were ThereGuest David Fravor · Host Lex FridmanNavy commander David Fravor tells Lex Fridman what four Super Hornet aircrew saw off the USS Nimitz in 2004, why he does not buy a secret human aircraft, and how an unexplained object never made anyone's to-do list.
2:48:46ENLet Physics Walk: Russ Tedrake on Underactuated Robots, Contact, and Barefoot CommutesGuest Russ Tedrake · Host Lex FridmanMIT’s Russ Tedrake talks with Lex Fridman about gravity-powered walkers, a dead trout that swims upstream, why contact still breaks classical control, and what the DARPA Robotics Challenge taught him about testing.
3:11:09ENIn the computational universe, the animals are always smarter than youGuest Stephen Wolfram · Host Lex FridmanStephen Wolfram talks with Lex Fridman about Rule 30, computational irreducibility, a hypergraph model of physics, and why Wolfram Language is a notation for talking about the world.
1:09:52ENLee Smolin Does Not Believe in the Scientific MethodGuest Lee Smolin · Host Lex FridmanThe theoretical physicist talks with Lex Fridman about realism, the measurement problem, and why finishing Einstein’s revolution means treating time as fundamental and locality as optional.
1:44:55ENIf You Need 60,000 Digits, You Have Not Found IntelligenceGuest Vladimir Vapnik · Host Lex FridmanVladimir Vapnik tells Lex Fridman that intelligence is the art of shrinking a sea of functions with a few good predicates — and that MNIST, solved with sixty examples per class, is the test.
1:34:44ENMoore's Law Has Been About to Die for Forty YearsGuest Jim Keller · Host Lex FridmanChip architect Jim Keller tells Lex Fridman why a cascade of diminishing-return curves still looks exponential, why you rewrite the CPU every five years, and why driving a car is not a super-hard problem.
1:30:20ENThe 1982 Crash Was the Best Thing That Happened to Ray DalioGuest Ray Dalio · Host Lex FridmanLex Fridman talks with the Bridgewater founder about truth, shapers, credit, AI, and why pain plus reflection equals progress.
1:41:43ENPumping Heat Into the Infinite Game: Tobi Lütke on First Principles and Human PotentialHost Lenny RachitskyShopify's founder explains how dissatisfaction with the status quo, long time horizons, and unquantifiable taste drive better products and companies.
1:29:52ENTurning Ambiguity into Clarity: Coda CPO Lane Shackleton on the Principles and Rituals of Great Product TeamsGuest Lane Shackleton · Host Lenny RachitskyFrom Alaskan mountain guide and AdWords ad reviewer to Chief Product Officer, Lane Shackleton shares the principles, meeting rituals and career habits he has collected from studying great product people.
12:16ENRule 30 and Richard Feynman: Stephen Wolfram on Intuition Versus Computational ExperimentHost Lex FridmanWolfram recalls working with Feynman at Thinking Machines, why Feynman hid his calculations, and how building a computer language changed his approach to science.
1:24:38ENPlant Seeds, Don't Pour Concrete: Alex Komoroske on Gardening Your Way Through the LLM EraGuest Alex Komoroske · Host Lenny RachitskyA former Google and Stripe strategist explains why LLMs are "magical duct tape," how organizations lie to themselves, and why gardeners beat builders when the playbook is changing.
24:08ENIntelligence Is Not Just Prediction: David Ferrucci on Explanation, Persuasion and Shared MeaningGuest David Ferrucci · Host Lex FridmanThe lead of IBM's Watson team argues that predicting well is only half of intelligence, and that being understood by others is the other half.
20:36ENWhy Simple Theories Win: Marcus Hutter on Occam's Razor, Compression and Kolmogorov ComplexityHost Lex FridmanDeepMind researcher Marcus Hutter explains Solomonoff induction, why compression equals understanding, and how a simple universe can still look rich.
11:34ENNeither Discovered Nor Invented: Grant Sanderson on the Cycle Between Math and the WorldHost Lex Fridman3Blue1Brown's Grant Sanderson tells Lex Fridman that mathematics feeds on a loop of discovery and invention, and wonders why the universe's laws are so compressible.









