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Lex Fridman Podcast

Lex Fridman
Lex Fridman Podcast
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503 episodes

  • Lex Fridman Podcast

    #503 – AI Crisis in Math: Navier-Stokes, Riemann Hypothesis & Complexity Theory

    2026-10-26 | 3h 42 mins.
    Ankur Moitra, Steven Brunton and Alex Kontorovich are three mathematicians who can speak to this incredible moment in the history of mathematics, when AI solved some of its hardest problems: Navier-Stokes, the quasi-Riemann hypothesis, the unique games conjecture and hundreds of other problems. Ankur Moitra is a mathematician at MIT (visiting the Institute for Advanced Study in Princeton) working in theoretical computer science, who can speak to the unique games conjecture, complexity theory and the mathematics of how AI learns. Steven Brunton is a mathematician and fluid dynamics expert at UW, who can speak to Navier-Stokes, turbulence and machine learning for fluid dynamics. Alex Kontorovich is a mathematician at Rutgers specializing in number theory, who can speak to the Riemann hypothesis, Lean and machine-checked proofs.

    Thank you for listening ❤ Check out our sponsors: https://lexfridman.com/sponsors/ep503-sc

    See below for timestamps, transcript, and to give feedback, submit questions, contact Lex, etc.

    Transcript:

    https://lexfridman.com/math-ai-crisis-transcript

    CONTACT LEX:

    Feedback – give feedback to Lex: https://lexfridman.com/survey

    AMA – submit questions, videos or call-in: https://lexfridman.com/ama

    Hiring – join our team: https://lexfridman.com/hiring

    Other – other ways to get in touch: https://lexfridman.com/contact

    EPISODE LINKS:

    Ankur’s Website: https://people.csail.mit.edu/moitra/

    Alex’s X: https://x.com/AlexKontorovich

    Alex’s Website: https://sites.math.rutgers.edu/~alexk/

    Steven’s X: https://x.com/eigensteve

    Steven’s YouTube: https://youtube.com/@Eigensteve

    Steven’s Website: https://eigensteve.com

    Lean: https://lean-lang.org/

    SPONSORS:

    To support this podcast, check out our sponsors & get discounts:

    Wispr Flow: AI-powered voice dictation app.

    Go to https://wisprflow.ai/lex

    Fin: AI agent for customer service.

    Go to https://fin.ai/lex

    LMNT: Zero-sugar electrolyte drink mix.

    Go to https://drinkLMNT.com/lex

    Blitzy: AI agent for large enterprise codebases.

    Go to https://blitzy.com/lex

    Shopify: Sell stuff online.

    Go to https://shopify.com/lex

    NetSuite: Business management software.

    Go to https://netsuite.ai/lex

    Perplexity: AI-powered answer engine.

    Go to https://perplexity.ai/

    OUTLINE:

    (00:00) – Introduction

    (01:58) – Sponsors, Comments, and Reflections

    (09:53) – Crisis moment in mathematics

    (18:10) – Will AI “solve” mathematics?

    (34:21) – Can AI create new math?

    (1:13:53) – Riemann hypothesis

    (1:37:45) – Navier-Stokes

    (2:03:42) – How nature computes

    (2:12:35) – Unique Games Conjecture and complexity theory

    (2:27:28) – How mathematicians think

    (2:41:05) – Is math invented or discovered?

    (2:47:13) – Can AI solve P vs NP?

    (2:57:28) – Why LLMs work so well

    (3:11:54) – Problems AI can’t solve yet

    (3:16:23) – Grigori Perelman

    (3:25:41) – Advice for young people
  • Lex Fridman Podcast

    #502 – Psychiatry, Insane Asylums, Mental Illness, ECT, Lobotomies, Freud & Jung

    2026-09-17 | 3h 43 mins.
    Andrew Scull is a historian of psychiatry.

    Thank you for listening ❤ Check out our sponsors: https://lexfridman.com/sponsors/ep502-sc

    See below for timestamps, transcript, and to give feedback, submit questions, contact Lex, etc.

    Transcript:

    https://lexfridman.com/andrew-scull-transcript

    CONTACT LEX:

    Feedback – give feedback to Lex: https://lexfridman.com/survey

    AMA – submit questions, videos or call-in: https://lexfridman.com/ama

    Hiring – join our team: https://lexfridman.com/hiring

    Other – other ways to get in touch: https://lexfridman.com/contact

    EPISODE LINKS:

    Andrew’s Website (UCSD faculty page): https://sociology.ucsd.edu/people/faculty/emeritus/andrew-scull.html

    Desperate Remedies (book): https://amzn.to/4vmBquI

    Madness in Civilization (book): https://amzn.to/3SZhd0I

    SPONSORS:

    To support this podcast, check out our sponsors & get discounts:

    Wispr Flow: AI-powered voice dictation app.

    Go to https://wisprflow.ai/lex

    Fin: AI agent for customer service.

    Go to https://fin.ai/lex

    LMNT: Zero-sugar electrolyte drink mix.

    Go to https://drinkLMNT.com/lex

    Shopify: Sell stuff online.

    Go to https://shopify.com/lex

    BetterHelp: Online therapy and counseling.

    Go to https://betterhelp.com/lex

    Perplexity: AI-powered answer engine.

    Go to https://perplexity.ai/

    OUTLINE:

    (00:00) – Introduction

    (01:07) – Sponsors, Comments, and Reflections

    (08:10) – Crisis in Psychiatry

    (37:48) – Categories of Mental Illness

    (45:07) – Asylums, Eugenics, and the Nazis

    (57:13) – The Ice Pick Lobotomy

    (1:03:26) – Malaria “Cure” for Syphilis

    (1:21:42) – Insulin Coma Therapy

    (1:29:34) – Electroconvulsive Therapy (ECT)

    (1:49:03) – One Flew Over the Cuckoo’s Nest

    (2:06:35) – Freud and Psychoanalysis

    (2:36:30) – WWII and Cognitive behavioral therapy (CBT)

    (2:57:04) – Antipsychotics

    (3:20:24) – Antidepressants

    (3:33:18) – Future of Psychiatry

    PODCAST LINKS:

    – Podcast Website: https://lexfridman.com/podcast

    – Apple Podcasts: https://apple.co/2lwqZIr

    – Spotify: https://open.spotify.com/episode/082a1V6nazH9ZZqskV1vfz

    – RSS: https://lexfridman.com/feed/podcast/

    – Podcast Playlist: https://www.youtube.com/playlist?list=PLrAXtmErZgOdP_8GztsuKi9nrraNbKKp4

    – Clips Channel: https://www.youtube.com/lexclips
  • Lex Fridman Podcast

    #501 – DHH: Future of Programming, AI, Agentic Engineering, Vibe Coding & Linux

    2026-08-26 | 5h 21 mins.
    DHH is the creator of Ruby on Rails, Omarchy Linux, CTO of 37signals, and a racecar driver.

    Thank you for listening ❤ Check out our sponsors: https://lexfridman.com/sponsors/ep501-sc

    See below for timestamps, transcript, and to give feedback, submit questions, contact Lex, etc.

    Transcript:

    https://lexfridman.com/dhh-2-transcript

    CONTACT LEX:

    Feedback – give feedback to Lex: https://lexfridman.com/survey

    AMA – submit questions, videos or call-in: https://lexfridman.com/ama

    Hiring – join our team: https://lexfridman.com/hiring

    Other – other ways to get in touch: https://lexfridman.com/contact

    EPISODE LINKS:

    DHH’s X: https://x.com/dhh

    DHH’s Blog: https://world.hey.com/dhh

    Omarchy: https://omarchy.org

    Ruby on Rails: https://rubyonrails.org

    37signals: https://37signals.com

    SPONSORS:

    To support this podcast, check out our sponsors & get discounts:

    Wispr Flow: AI-powered voice dictation app.

    Go to https://wisprflow.ai/lex

    Blitzy: AI agent for large enterprise codebases.

    Go to https://blitzy.com/lex

    NetSuite: Business management software.

    Go to http://netsuite.ai/lex

    Shopify: Sell stuff online.

    Go to https://shopify.com/lex

    LMNT: Zero-sugar electrolyte drink mix.

    Go to https://drinkLMNT.com/lex

    Plaud: AI-powered note-taking devices and software.

    Go to https://plaud.ai/lex

    Higgsfield AI: AI-based video generation, filmmaking, and creative studio.

    Go to https://higgsfield.ai

    Perplexity: AI-powered answer engine.

    Go to https://perplexity.ai/

    OUTLINE:

    (00:00) – Introduction

    (01:14) – Sponsors, Comments, and Reflections

    (08:56) – Programming with AI agents

    (24:14) – How software will change

    (33:30) – AI impact on open source

    (43:21) – Building Omarchy Linux distro

    (53:05) – Vibe coding vs agentic engineering

    (1:06:06) – The end of manual programming

    (1:16:24) – Advice for programmers

    (1:28:31) – Surviving Internet Hate

    (1:37:46) – Programming setup for AI Agents

    (1:50:11) – Obsessing about speed

    (2:13:06) – Voice prompting vs typing

    (2:27:05) – Best AI coding models

    (2:43:55) – Best AI coding harnesses

    (2:56:57) – AI video generation and filmmaking

    (3:16:28) – Fatherhood

    (3:44:35) – Linux will win the desktop

    (3:55:51) – PewDiePie

    (4:05:25) – Future of programming

    (4:28:18) – Politics and immigration

    (4:59:55) – Longevity, over-optimization, and fear of death

    (5:11:38) – Eternal recurrence and future of human civization
  • Lex Fridman Podcast

    #500 – Khabib Nurmagomedov: Dagestan, MMA, UFC, Islam, Conor, Fedor & Football

    2026-08-12 | 3h 19 mins.
    Khabib Nurmagomedov is one of the greatest fighters of all time, who retired from the UFC undefeated with a perfect 29-0 record. We did this conversation entirely in Russian. It’s translated and dubbed into English. Both language audio tracks (and subtitles) are available on YouTube. Here, only the English audio is available. We worked hard to make it enjoyable to listen to, by carefully dubbing the translation using voice-cloning, as we’ve done for previous foreign-language podcasts.

    Thank you for listening ❤ Check out our sponsors: https://lexfridman.com/sponsors/ep500-sc

    See below for timestamps, transcript, and to give feedback, submit questions, contact Lex, etc.

    Transcript:

    https://lexfridman.com/khabib-nurmagomedov-transcript

    CONTACT LEX:

    Feedback – give feedback to Lex: https://lexfridman.com/survey

    AMA – submit questions, videos or call-in: https://lexfridman.com/ama

    Hiring – join our team: https://lexfridman.com/hiring

    Other – other ways to get in touch: https://lexfridman.com/contact

    EPISODE LINKS:

    Khabib’s Instagram: https://instagram.com/khabib_nurmagomedov/

    Khabib’s YouTube: https://youtube.com/@KhabibTheEagle

    Khabib’s Facebook: https://facebook.com/KhabibTheEagle/

    Khabib’s X: https://x.com/TeamKhabib

    Khabib’s Telegram: https://t.me/khabib_nurmagomedov

    Khabib’s Website: https://khabib.com

    SPONSORS:

    To support this podcast, check out our sponsors & get discounts:

    Wispr Flow: AI-powered voice dictation app.

    Go to https://wisprflow.ai/lex

    LMNT: Zero-sugar electrolyte drink mix.

    Go to https://drinkLMNT.com/lex

    Shopify: Sell stuff online.

    Go to https://shopify.com/lex

    BetterHelp: Online therapy and counseling.

    Go to https://betterhelp.com/lex

    Perplexity: AI-powered answer engine.

    Go to https://perplexity.ai/

    OUTLINE:

    (00:00) – Introduction

    (01:29) – Sponsors, Comments, and Reflections

    (08:24) – Why Dagestan produces so many great fighters

    (18:31) – History of Dagestan warrior culture

    (27:51) – Hard training in the mountains of Dagestan

    (31:42) – The trap of fame, money, and power

    (42:23) – The key to Khabib’s dominance

    (53:36) – Discipline and hard work

    (1:06:04) – Street fights in Dagestan

    (1:19:45) – Khabib’s top pressure

    (1:25:29) – Khabib vs Conor McGregor

    (1:38:14) – Khabib’s toughest fight

    (1:46:02) – Greatest MMA fighters of all time

    (2:03:46) – Coaching

    (2:09:19) – Daniel Cormier

    (2:13:38) – Islam Makhachev

    (2:23:35) – Dana White

    (2:27:05) – Joe Rogan

    (2:29:20) – Ali Abdelaziz

    (2:31:57) – Football

    (2:39:12) – Messi vs Ronaldo

    (2:57:12) – Dubai

    (3:01:03) – God

    (3:08:46) – Advice for young people
  • Lex Fridman Podcast

    #499 – Gary Gallagher: American Civil War, Slavery, Lincoln, Grant & Lee

    2026-07-28 | 3h 53 mins.
    Gary Gallagher is a historian of the American Civil War.

    Thank you for listening ❤ Check out our sponsors: https://lexfridman.com/sponsors/ep499-sc

    See below for timestamps, transcript, and to give feedback, submit questions, contact Lex, etc.

    Transcript:

    https://lexfridman.com/gary-gallagher-transcript

    CONTACT LEX:

    Feedback – give feedback to Lex: https://lexfridman.com/survey

    AMA – submit questions, videos or call-in: https://lexfridman.com/ama

    Hiring – join our team: https://lexfridman.com/hiring

    Other – other ways to get in touch: https://lexfridman.com/contact

    EPISODE LINKS:

    Gary’s UVA page: https://history.virginia.edu/people/gary-w-gallagher

    Gary’s Wikipedia: https://en.wikipedia.org/wiki/Gary_W._Gallagher

    The Confederate War (book): https://amzn.to/4yletel

    The Union War (book): https://amzn.to/3QT1jED

    Lee and His Generals in War and Memory (book): https://amzn.to/4fdrbD5

    Causes Won, Lost, and Forgotten (book): https://amzn.to/4wFxk1X

    The Myth of the Lost Cause and Civil War History (book): https://amzn.to/4vsAogU

    The Great Courses – The American Civil War: https://bit.ly/4gDX3mQ

    SPONSORS:

    To support this podcast, check out our sponsors & get discounts:

    Upwork: Platform for hiring freelancers.

    Go to https://upwork.com/lex

    NetSuite: Business management software.

    Go to http://netsuite.ai/lex

    Shopify: Sell stuff online.

    Go to https://shopify.com/lex

    LMNT: Zero-sugar electrolyte drink mix.

    Go to https://drinkLMNT.com/lex

    BetterHelp: Online therapy and counseling.

    Go to https://betterhelp.com/lex

    Perplexity: AI-powered answer engine.

    Go to https://perplexity.ai/

    Plaud: AI-powered note-taking devices and software.

    Go to https://plaud.ai/lex

    OUTLINE:

    (00:00) – Introduction

    (00:07) – Sponsors, Comments, and Reflections

    (08:36) – What caused the Civil War?

    (18:33) – Slavery

    (46:07) – Lincoln

    (1:01:03) – Grant vs Lee

    (1:09:57) – Could the Civil War have been avoided?

    (1:19:23) – The bloodiest war in US history

    (1:36:31) – How the Confederate Army could’ve won

    (1:57:05) – Key battles of the Civil War

    (2:20:07) – Best and Worst Presidents

    (2:34:06) – Robert E. Lee

    (2:53:40) – The most important battle of the Civil War

    (3:03:51) – The final showdown of the Civil War – Grant vs Lee

    (3:26:10) – Lost Cause and Confederate Monuments

    (3:43:37) – Extreme political division in US
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About Lex Fridman Podcast
Conversations that explore technology, history, philosophy, physics, mathematics, biology, chemistry, engineering, AI, robotics, programming, music, film, art, sports, psychology, neuroscience, geopolitics, business, economics, religion, astronomy, and the human condition with people from all walks of life.
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