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2:51:17ENOumuamua Wasn't Supposed to Exist. Avi Loeb Wants a Photograph Next Time.Guest Avi Loeb · Host Lex FridmanHarvard astrophysicist Avi Loeb tells Lex Fridman why the first interstellar visitor looks more like a lightsail than a rock — and why that question is still treated as unscientific.
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.
2:14:55ENHis Wife Calls Him the RadioGuest Manolis Kellis · Host Lex FridmanMIT computational biologist Manolis Kellis spends the first forty minutes of his fourth Lex Fridman conversation on the songs that formed him, then turns to 42, dinosaurs, and why hunting for meaning matters more than finding it.
2:40:00ENThe Light Never Broke the Speed Limit. Space Itself Stretched.Guest Alex Filippenko · Host Lex FridmanBerkeley astrophysicist Alex Filippenko talks dark energy, exploding stars, aliens, and how a 13.7-billion-year-old universe can be 45.7 billion light-years across.
2:01:15ENNobody Died from the Fukushima ReactorsGuest Ian Hutchinson · Host Lex FridmanMIT plasma physicist Ian Hutchinson on fusion, a hundredfold carbon cut, scientism, and why faith is more than believing unproven claims.
1:09:14ENSuffering Is a State You'd Rather Not Be In — Peter Singer on Animals, Robots, and UsGuest Peter Singer · Host Lex FridmanOn Lex Fridman's podcast, the Princeton bioethicist defines suffering, extends it from factory farms to possible machine minds, and still puts extreme poverty first.
1:56:38ENBostrom Will Not Pick a Fork: The Simulation Argument Is a Disjunction, Not a BetGuest Nick Bostrom · Host Lex FridmanNick Bostrom walks Lex Fridman through the simulation argument, anthropic reasoning, and why superintelligence talk should be split into near-term and long-term conversations.
1:11:09ENAva smiled when nobody was watchingGuest Alex Garland · Host Lex FridmanAlex Garland talks with Lex Fridman about Ex Machina, Annihilation, Devs, and how you tell whether anything is really in there.
1:16:58ENFear of Robots Is a Champagne Problem, Says Whitney CummingsGuest Whitney Cummings · Host Lex FridmanThe comedian talks with Lex Fridman about Bear Claw, sex robots, factory farms, codependency, and terror management.
36:10ENSo You're Saying There's a Chance: Musk on Neuralink, AI, and a Pale Blue DotGuest Elon Musk · Host Lex FridmanLex Fridman and Elon Musk move from consciousness and an AI referee to the engineering of a brain implant, Tesla Autopilot, and Carl Sagan's lonely speck.
1:01:00ENA Hundred Billion Galaxies, and We're Still a Type 0.7 CivilizationGuest Michio Kaku · Host Lex FridmanTheoretical physicist Michio Kaku talks with Lex Fridman about aliens, string theory, digital immortality, and why fusion and Mars are the next civilizational steps.
1:00:06ENPamela McCorduck: AI Began With the Ancient Wish to Forge the GodsGuest Pamela McCorduck · Host Lex FridmanThe novelist who wrote the first popular history of artificial intelligence talks with Lex Fridman about Dartmouth, AI winters, and why existential panic looks like the male gaze.
1:25:07ENThe Only Real Freedom Is How AGI Is BornGuest Greg Brockman · Host Lex FridmanGreg Brockman tells Lex Fridman why OpenAI’s job is to set the initial conditions of general intelligence, not to monopolize who builds it.
1:21:56ENWe Keep Waiting for AGI. Eric Weinstein Says Artificial Life Is Already HereGuest Eric Weinstein · Host Lex FridmanOn the Lex Fridman Podcast, the mathematician and Thiel Capital managing director argues that selection without intelligence can already parasitize us, and that our bigger failure is wisdom that never caught up with the toys.
37:53ENSteven Pinker: Intelligence Is Not a Will to PowerGuest Steven Pinker · Host Lex FridmanThe Harvard psychologist tells Lex Fridman why nuke analogies, paperclip stories, and AI-takeover fears mix up problem-solving with domination.
1:22:58ENIf NASA finds nothing on Mars, Max Tegmark cheersGuest Max Tegmark · Host Lex FridmanThe MIT physicist behind Life 3.0 tells Lex Fridman why we may be the only advanced life in the observable universe, and why that makes AGI alignment a cosmic responsibility rather than a science-fiction subplot.
1:38:23ENYudkowsky and Hanson Debate Whether an Intelligence Explosion Would Be LocalEliezer Yudkowsky, Robin HansonA historical debate about self-improving AI, accumulated knowledge, innovation and whether a first mover could gain a decisive lead.
1:23:56ENA Three-Month Window: The AI 2027 Authors on Superhuman Coders, Faked Alignment and Who Ends Up in ControlHost Jacob EffronDaniel Kokotajlo and Thomas Larsen walk through their AI 2027 scenario, where they disagree on timelines and alignment, and what they think governments and the public should do.
21:41ENFrom Simulated Majorities to "You Are Probably Simulated": Bostrom on the Missing Step in the Simulation ArgumentHost Lex FridmanNick Bostrom explains to Lex Fridman why the simulation argument rests on a much weaker assumption than the Doomsday argument, and where its physical limits might lie.
2:04:07ENSleepwalking Into an AI Arms Race: The Case for a Different China StrategyHost Nathan LabenzRobert Wright and Nathan Labenz question the China-hawk consensus in AI circles, from the chip war and Taiwan to a 2027 war game and the search for a better plan.
29:54ENSeven Levels of a Pandemic: Pain, Challenge and Hope From Biology to PhilosophyHost Lex FridmanLex Fridman maps the coronavirus onto seven levels of attack on society and proposes a response and a reason for hope at each one.
1:19:13ENAlien Intelligence, Radical Upside: Nathan Labenz on Why AI Is the Next Industrial RevolutionHost Nathan LabenzIn the second episode of The Cognitive Revolution, Nathan Labenz tells Erik Torenberg how he went from asteroid-watching AI skeptic to full-time AI scout, and lays out the upside and downside cases.
53:39ENA Libertarian's Case for Regulating AI: Kill Switches, Chip Choke Points and a New Form of LifeHost Nathan LabenzLindy founder Flo Crivello explains why a self-described accelerationist makes an exception for superintelligence, and what he thinks of Biden's executive order.
11:41ENTeaching Machines Humility: Stuart Russell on Escaping the King Midas ProblemGuest Stuart Russell · Host Lex FridmanIn a short clip from a 2018 conversation, Berkeley's Stuart Russell explains why fixed objectives make superintelligent AI dangerous and why uncertainty about our goals is the fix.
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