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3:52:17EN
Lex Fridman· Dec 31, 2025PodcastSome Infinities Are Larger Than OthersHost Lex FridmanJoel David Hamkins walks Lex Fridman from Hilbert's Hotel through Gödel, the continuum hypothesis, and a set-theoretic multiverse where truth is not the same as proof.
3:14:34ENLex Fridman· Jun 14, 2025Podcast · 2 speakersIf ten things make a problem hard, Terence Tao turns nine of them offGuest Terence Tao · Host Lex FridmanThe Fields Medalist walks Lex Fridman from the Kakeya needle and Navier-Stokes through Lean, Perelman, and why today's AI still cannot smell a dead-end proof.
3:46:39ENLex Fridman· Apr 9, 2023Podcast · 2 speakersHe Hated School Math Until a Professor Opened the Book to QuarksGuest Edward Frenkel · Host Lex FridmanEdward Frenkel talks with Lex Fridman about Soviet childhood, the Langlands program, Gödel, AI, and why every hard objective theory still ends with an observer.
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.
1:30:40ENLex Fridman· Sep 27, 2021Podcast · 2 speakersI'm Giving You This Feedback Because I Believe in YouGuest Jo Boaler · Host Lex FridmanStanford mathematician Jo Boaler on visual math, why struggle only works if you think you can get there, and how a 90-minute class raised classroom engagement 68 percent.
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.
2:20:15ENLex 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.
2:08:26ENLex Fridman· Aug 23, 2020Podcast · 2 speakersSatisfying Lectures Don't Stick: Grant Sanderson on Feynman, Fear, and Hitting PublishGuest Grant Sanderson · Host Lex FridmanThe 3Blue1Brown creator talks with Lex Fridman about why the nicest explanations can fail, why he envies Bell Labs, and why the experts most qualified to teach are the ones least willing to post.
1:02:45ENLex Fridman· Jan 7, 2020Podcast · 2 speakersAliens Would Count. They Probably Wouldn't Write e^x.Guest Grant Sanderson · Host Lex FridmanGrant Sanderson of 3Blue1Brown talks with Lex Fridman about notation, infinity, and why a visualization has to pick a single arrow.
54:58ENLex FridmanPodcastEric Weinstein on Geometric Unity: One Canvas, Fourteen Dimensions and a Theory of EverythingHost Lex FridmanEric Weinstein talks with Lex Fridman about releasing his Oxford lecture, why academia resists his ideas, and how Geometric Unity tries to derive matter from the geometry of spacetime.