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Lex Fridman Podcast

Lex Fridman
Lex Fridman Podcast
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490 episodes

  • Lex Fridman Podcast

    #489 – Paul Rosolie: Uncontacted Tribes in the Amazon Jungle

    2026/1/13 | 3h 14 mins.
    Paul Rosolie is a naturalist, explorer, author of a new book titled Junglekeeper, and is someone who has dedicated his life to protecting the Amazon rainforest.

    Thank you for listening ❤ Check out our sponsors: https://lexfridman.com/sponsors/ep489-sc

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

    Transcript:

    https://lexfridman.com/paul-rosolie-3-transcript

    CONTACT LEX:

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

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

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

    EPISODE LINKS:

    Junglekeeper (new book): https://amzn.to/4q7vpAp

    Paul’s Instagram: https://instagram.com/paulrosolie

    Junglekeepers Website: https://junglekeepers.org

    Paul’s Website: https://paulrosolie.com

    Mother of God (book): https://amzn.to/3ww2ob1

    SPONSORS:

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

    Perplexity: AI-powered answer engine.

    Go to https://perplexity.ai/

    BetterHelp: Online therapy and counseling.

    Go to https://betterhelp.com/lex

    LMNT: Zero-sugar electrolyte drink mix.

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    MasterClass: Online classes from world-class experts.

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    OUTLINE:

    (00:00) – Introduction

    (02:34) – Sponsors, Comments, and Reflections

    (12:00) – Uncontacted tribes in the Amazon Jungle

    (19:46) – Intense new encounter

    (42:52) – Never-before-seen footage of tribe warriors

    (56:08) – The mysteries of the jungle

    (1:10:43) – Tribe’s diet: Monkeys, turtles, and turtle eggs

    (1:20:19) – Jane Goodall

    (1:26:31) – Advice for young people

    (1:35:45) – Cartel, Narco-traffickers & assassination attempts

    (1:57:45) – Climbing the giant tree

    (2:08:43) – Giant anaconda

    (2:26:01) – Rescuing a spider monkey

    (2:32:05) – Dangerous animal encounters

    (2:42:13) – Writing, journaling, and great writer inspirations

    PODCAST LINKS:

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

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

    – Spotify: https://spoti.fi/2nEwCF8

    – 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

    #488 – Infinity, Paradoxes that Broke Mathematics, Gödel Incompleteness & the Multiverse – Joel David Hamkins

    2025/12/31
    Joel David Hamkins is a mathematician and philosopher specializing in set theory, the foundations of mathematics, and the nature of infinity, and he’s the #1 highest-rated user on MathOverflow. He is also the author of several books, including Proof and the Art of Mathematics and Lectures on the Philosophy of Mathematics. And he has a great blog called Infinitely More.

    Thank you for listening ❤ Check out our sponsors: https://lexfridman.com/sponsors/ep488-sc

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

    Transcript:

    https://lexfridman.com/joel-david-hamkins-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:

    Joel’s X: https://x.com/JDHamkins

    Joel’s Website: https://jdh.hamkins.org

    Joel’s Substack: https://www.infinitelymore.xyz

    Joel’s MathOverflow: https://mathoverflow.net/users/1946/joel-david-hamkins

    Joel’s Papers: https://jdh.hamkins.org/publications

    Joel’s Books:

    Lectures on the Philosophy of Mathematics: https://amzn.to/3MThaAt

    Proof and the Art of Mathematics: https://amzn.to/3YACc9A

    SPONSORS:

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

    Perplexity: AI-powered answer engine.

    Go to https://www.perplexity.ai/

    Fin: AI agent for customer service.

    Go to https://fin.ai/lex

    Miro: Online collaborative whiteboard platform.

    Go to https://miro.com/

    CodeRabbit: AI-powered code reviews.

    Go to https://coderabbit.ai/lex

    Chevron: Reliable energy for data centers.

    Go to https://chevron.com/power

    Shopify: Sell stuff online.

    Go to https://shopify.com/lex

    LMNT: Zero-sugar electrolyte drink mix.

    Go to https://drinkLMNT.com/lex

    MasterClass: Online classes from world-class experts.

    Go to https://masterclass.com/lexpod

    OUTLINE:

    (00:00) – Introduction

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

    (15:40) – Infinity & paradoxes

    (1:02:50) – Russell’s paradox

    (1:15:57) – Gödel’s incompleteness theorems

    (1:33:28) – Truth vs proof

    (1:44:52) – The Halting Problem

    (2:00:45) – Does infinity exist?

    (2:18:19) – MathOverflow

    (2:22:12) – The Continuum Hypothesis

    (2:31:58) – Hardest problems in mathematics

    (2:41:25) – Mathematical multiverse

    (3:00:18) – Surreal numbers

    (3:10:55) – Conway’s Game of Life

    (3:13:11) – Computability theory

    (3:23:04) – P vs NP

    (3:26:21) – Greatest mathematicians in history

    (3:40:05) – Infinite chess

    (3:58:24) – Most beautiful idea in mathematics
  • Lex Fridman Podcast

    #487 – Irving Finkel: Deciphering Secrets of Ancient Civilizations & Flood Myths

    2025/12/12
    Irving Finkel is a scholar of ancient languages and a longtime curator at the British Museum, renowned for his expertise in Mesopotamian history and cuneiform writing. He specializes in reading and interpreting cuneiform inscriptions, including tablets from Sumerian, Akkadian, Babylonian, and Assyrian contexts. He became widely known for studying a tablet with a Mesopotamian flood story that predates the biblical Noah narrative, which he presented in his book “The Ark Before Noah” and in a documentary that involved building a circular ark based on the tablet’s technical instructions.

    Thank you for listening ❤ Check out our sponsors: https://lexfridman.com/sponsors/ep487-sc

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

    Transcript:

    https://lexfridman.com/irving-finkel-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:

    Irving’s Instagram: https://www.instagram.com/drirvingfinkel/

    The Ark Before Noah (book): https://amzn.to/4j2U0DW

    Irving Lectures Playlist: https://www.youtube.com/playlist?list=PLYXwZvOwHjVcFUi9iEqirkXRaCUJdXGha

    British Museum Video Playlist: https://www.youtube.com/playlist?list=PL0LQM0SAx603A6p5EJ9DVcESqQReT7QyK

    British Museum Website: https://www.britishmuseum.org/

    The Great Diary Project: https://thegreatdiaryproject.co.uk/

    SPONSORS:

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

    Shopify: Sell stuff online.

    Go to https://shopify.com/lex

    Miro: Online collaborative whiteboard platform.

    Go to https://miro.com/

    Chevron: Reliable energy for data centers.

    Go to https://chevron.com/power

    LMNT: Zero-sugar electrolyte drink mix.

    Go to https://drinkLMNT.com/lex

    AG1: All-in-one daily nutrition drink.

    Go to https://drinkag1.com/lex

    OUTLINE:

    (00:00) – Introduction

    (00:43) – Sponsors, Comments, and Reflections

    (09:53) – Origins of human language

    (15:59) – Cuneiform

    (23:12) – Controversial theory about Göbekli Tepe

    (34:23) – How to write and speak Cuneiform

    (39:42) – Primitive human language

    (41:26) – Development of writing systems

    (42:20) – Decipherment of Cuneiform

    (54:51) – Limits of language

    (59:51) – Art of translation

    (1:05:01) – Gods

    (1:10:25) – Ghosts

    (1:20:13) – Ancient flood stories

    (1:30:21) – Noah’s Ark

    (1:41:44) – The Royal Game of Ur

    (1:54:43) – British Museum

    (2:02:08) – Evolution of human civilization
  • Lex Fridman Podcast

    #486 – Michael Levin: Hidden Reality of Alien Intelligence & Biological Life

    2025/11/30
    Michael Levin is a biologist at Tufts University working on novel ways to understand and control complex pattern formation in biological systems.

    Thank you for listening ❤ Check out our sponsors: https://lexfridman.com/sponsors/ep486-sc

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

    Transcript:

    https://lexfridman.com/michael-levin-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:

    Michael Levin’s X: https://x.com/drmichaellevin

    Michael Levin’s Website: https://drmichaellevin.org

    Michael Levin’s Papers: https://drmichaellevin.org/publications/

    – Biological Robots: https://arxiv.org/abs/2207.00880

    – Classical Sorting Algorithms: https://arxiv.org/abs/2401.05375

    – Aging as a Morphostasis Defect: https://pubmed.ncbi.nlm.nih.gov/38636560/

    – TAME: https://arxiv.org/abs/2201.10346

    – Synthetic Living Machines: https://www.science.org/doi/10.1126/scirobotics.abf1571

    SPONSORS:

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

    Shopify: Sell stuff online.

    Go to https://shopify.com/lex

    CodeRabbit: AI-powered code reviews.

    Go to https://coderabbit.ai/lex

    LMNT: Zero-sugar electrolyte drink mix.

    Go to https://drinkLMNT.com/lex

    UPLIFT Desk: Standing desks and office ergonomics.

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    Miro: Online collaborative whiteboard platform.

    Go to https://miro.com/

    MasterClass: Online classes from world-class experts.

    Go to https://masterclass.com/lexpod

    OUTLINE:

    (00:00) – Introduction

    (00:29) – Sponsors, Comments, and Reflections

    (10:09) – Biological intelligence

    (18:42) – Living vs non-living organisms

    (23:55) – Origin of life

    (27:40) – The search for alien life (on Earth)

    (1:00:44) – Creating life in the lab – Xenobots and Anthrobots

    (1:13:46) – Memories and ideas are living organisms

    (1:27:26) – Reality is an illusion: The brain is an interface to a hidden reality

    (2:13:13) – Unexpected Intelligence in sorting algorithms

    (2:38:51) – Can aging be reversed?

    (2:42:41) – Mind uploading

    (3:01:22) – Alien intelligence

    (3:16:17) – Advice for young people

    (3:22:46) – Questions for AGI
  • Lex Fridman Podcast

    #485 – David Kirtley: Nuclear Fusion, Plasma Physics, and the Future of Energy

    2025/11/17
    David Kirtley is a nuclear fusion engineer and CEO of Helion Energy, a company working on building the world’s first commercial fusion power plant by 2028.

    Thank you for listening ❤ Check out our sponsors: https://lexfridman.com/sponsors/ep485-sc

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

    Transcript:

    https://lexfridman.com/david-kirtley-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:

    David’s X: https://x.com/dekirtley

    David’s LinkedIn: https://bit.ly/4qX0KXp

    Helion: https://www.helionenergy.com/

    Helion’s YouTube: https://youtube.com/HelionEnergy

    SPONSORS:

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

    UPLIFT Desk: Standing desks and office ergonomics.

    Go to https://upliftdesk.com/lex

    Fin: AI agent for customer service.

    Go to https://fin.ai/lex

    Miro: Online collaborative whiteboard platform.

    Go to https://miro.com/

    LMNT: Zero-sugar electrolyte drink mix.

    Go to https://drinkLMNT.com/lex

    BetterHelp: Online therapy and counseling.

    Go to https://betterhelp.com/lex

    Shopify: Sell stuff online.

    Go to https://shopify.com/lex

    OUTLINE:

    (00:00) – Introduction

    (03:00) – Sponsors, Comments, and Reflections

    (11:35) – Nuclear fission vs fusion

    (21:35) – Physics of E=mc^2

    (26:50) – Is nuclear fusion safe?

    (32:11) – Chernobyl

    (38:38) – Geopolitics

    (40:33) – Extreme scenarios

    (47:28) – How nuclear fusion works

    (1:20:20) – Extreme temperatures

    (1:25:21) – Fusion control and simulation

    (1:37:15) – Electricity from fusion

    (2:11:20) – First fusion power plant in 2028

    (2:18:13) – Energy needs of GPU clusters

    (2:28:38) – Kardashev scale

    (2:36:33) – Fermi Paradox

    PODCAST LINKS:

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

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

    – Spotify: https://spoti.fi/2nEwCF8

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

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

    – Clips Channel: https://www.youtube.com/lexclips

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About Lex Fridman Podcast

Conversations about science, technology, history, philosophy and the nature of intelligence, consciousness, love, and power. Lex is an AI researcher at MIT and beyond.
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