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Lex Fridman· Nov 17, 2025Podcast · 2 speakersOne Second of Fuel: David Kirtley on Fusion Power by 2028Guest David Kirtley · Host Lex FridmanThe Helion Energy CEO walks Lex Fridman from 1958 theta pinches to a Microsoft contract that wants first electrons on the grid in 2028.
3:54:13ENLex Fridman· Jan 19, 2025Podcast · 2 speakersFriedman Followed the Data. Rand Started From Axioms. Both Defended Capitalism.Guest Jennifer Burns · Host Lex FridmanHistorian Jennifer Burns tells Lex Fridman how Milton Friedman and Ayn Rand reached individualism by opposite roads, and why freedom—not desert—became Friedman’s ethic.
3:32:44ENLex Fridman· Feb 20, 2024Podcast · 2 speakersWhen a Company Fails, Blame the Board: Bill Ackman on Value, Harvard, and a Journalist With a PenGuest Bill Ackman · Host Lex FridmanThe Pershing Square founder walks Lex Fridman from Benjamin Graham's Mr. Market through activist battles, campus ideology, and a looming fight with Business Insider.
2:11:32ENLex Fridman· Dec 14, 2023Podcast · 2 speakersThere Are a Thousand Ways to Be Smart: Jeff Bezos on Amazon and the Road to SpaceGuest Jeff Bezos · Host Lex FridmanIn a two-hour conversation with Lex Fridman, the Amazon founder talks through ranch self-reliance, New Glenn, Day One culture, and why he treats large language models as discoveries.
2:07:49ENLex Fridman· Sep 10, 2023Podcast · 2 speakersNobody avoids getting scarred. The question is how you deal with itGuest Walter Isaacson · Host Lex FridmanWalter Isaacson talks with Lex Fridman about the childhoods, demons, and working methods of Elon Musk, Steve Jobs, Einstein, Leonardo da Vinci, and Benjamin Franklin.
5:15:44ENLex Fridman· Feb 2, 2023Podcast · 2 speakersThe Falcon 9 Cannot Hover. That Is Why the Landing Looks Impossible.Guest Tim Dodd · Host Lex FridmanEveryday Astronaut Tim Dodd walks Lex Fridman from Falcon 1 to Starship, and explains why a rocket that is always too powerful to hover still sticks the landing.
3:08:07ENLex Fridman· Jan 21, 2023Podcast · 2 speakersA Hundred Million Degrees, Less Energy Than Boiling WaterGuest Dennis Whyte · Host Lex FridmanMIT fusion director Dennis Whyte walks Lex Fridman from E=mc² and the strong force to why a star-hot plasma is, paradoxically, one of the safer ways to make electricity.
5:14:50ENLex Fridman· Aug 4, 2022Podcast · 2 speakersThe best programming language is the one you already useGuest John Carmack · Host Lex FridmanJohn Carmack talks with Lex Fridman about languages, id Software, VR, rockets, and why AGI might be tens of thousands of lines of code.
2:43:51ENLex Fridman· Jun 25, 2022Podcast · 2 speakersTwo Tubes, Millimeters Apart: Jonathan Reisman on the Honest Design of the Human BodyGuest Jonathan Reisman · Host Lex FridmanThe emergency physician and author of The Unseen Body walks Lex Fridman from the throat to the Arctic, arguing that anatomy is mostly brilliant, sometimes a near-miss, and always a story written in scars.
4:13:30ENLex Fridman· Jun 9, 2022Podcast · 2 speakersHumanity showed up 10^18 times too earlyGuest Robin Hanson · Host Lex FridmanRobin Hanson tells Lex Fridman why our date in cosmic history is data, and why an empty sky means the loud aliens are coming fast.
3:56:54ENLex Fridman· Apr 14, 2022Podcast · 2 speakersWhen You Inflate Money at 7% and Call It 2%, You Are Bleeding the PatientGuest Michael Saylor · Host Lex FridmanOn Lex Fridman's podcast, MicroStrategy CEO Michael Saylor argues that inflation is a vector, economics deserves a failing grade, and Bitcoin is the first ethical block of digital energy.
2:37:03ENLex Fridman· Feb 13, 2022Podcast · 2 speakersNo One Knows How to Make a PencilGuest Tim Urban · Host Lex FridmanWait But Why's Tim Urban spent five years on a book about why society is tearing itself apart, then sat down with Lex Fridman to talk aliens, Musk, Neuralink, and the war inside a procrastinator's head.
2:59:02ENLex Fridman· Jan 30, 2022PodcastWhen the Answers Are Already Known, Look Where Everyone Stopped LookingHost Lex FridmanGeorges St-Pierre, John Danaher, and Gordon Ryan sit with Lex Fridman to unpack success, confidence, training, and why the greatest of all time may not even be born yet.
2:15:56ENLex Fridman· Dec 3, 2021Podcast · 2 speakersA Theory That Fits Anything Is Not Even WrongGuest Peter Woit · Host Lex FridmanColumbia physicist Peter Woit tells Lex Fridman why string theory's original idea emptied out, why four dimensions are enough, and what twistor theory still offers.
2:21:27ENLex Fridman· Sep 9, 2021Podcast · 2 speakersThe IBM Manual Was So Bad He Became a Computer ScientistGuest Donald Knuth · Host Lex FridmanDonald Knuth talks with Lex Fridman about first programs on an IBM 650, literate programming, the Knuth-Morris-Pratt algorithm, and the hardest theorem he ever proved.
1:52:17ENLex Fridman· Aug 27, 2021Podcast · 2 speakersOld Theories Rarely Die of Contradiction. They Stop Making New Things.Guest Jed Buchwald · Host Lex FridmanCaltech historian Jed Buchwald talks with Lex Fridman about Kuhn, Newton, and why scientific change is a victory of productivity more than of proof.
2:42:57ENLex Fridman· Aug 3, 2021Podcast · 2 speakersThe Thousand-Pound Day Was Easy. The Years Before It Were Not.Guest Chris Duffin · Host Lex FridmanLex Fridman talks with strength athlete and engineer Chris Duffin about squatting and deadlifting 1,000 pounds for reps, stacking the torso like a pressure vessel, and a childhood spent handling live rattlesnakes.
2:39:53ENLex Fridman· Jul 19, 2021Podcast · 2 speakersThere's Something at the Edge of the Solar SystemGuest Konstantin Batygin · Host Lex FridmanCaltech planetary astrophysicist Konstantin Batygin tells Lex Fridman how a hypothesized five-Earth-mass world shepherds the distant Kuiper Belt — and why a photograph would end the argument.
2:41:47ENLex Fridman· Jun 12, 2021Podcast · 2 speakersGeometry Is the Cilantro of MathGuest Jordan Ellenberg · Host Lex FridmanJordan Ellenberg tells Lex Fridman that the last 150 years of mathematics have been about one question: when two things count as the same.
2:22:20ENLex Fridman· May 29, 2021Podcast · 2 speakersThe closer quarks get, the weaker they pullGuest Frank Wilczek · Host Lex FridmanNobel physicist Frank Wilczek talks with Lex Fridman about asymptotic freedom, beauty, dark matter, consciousness, and whether a theory of everything would even help.
2:20:15ENLex Fridman· May 14, 2021Podcast · 2 speakersThe virus is not meters away. It is hops away.Guest Po-Shen Loh · Host Lex FridmanPo-Shen Loh talks with Lex Fridman about teaching invention, combinatorics, and a contact-tracing app that warns you before you get sick.
3:37:54ENLex Fridman· May 9, 2021Podcast · 2 speakersYou Die Twice: John Danaher on Mastery, Heuristics, and the Five-Year RebuildGuest John Danaher · Host Lex FridmanThe jiu jitsu coach talks death, leglocks, Georges St-Pierre, and why confidence is the missing half of technique.
2:43:09ENLex Fridman· Apr 25, 2021Podcast · 2 speakersGeorges 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.
4:03:49ENLex Fridman· Apr 17, 2021Podcast · 2 speakersMoney 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.Load moreShowing 24 of 43