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1:47:08ENKimbal Musk Cooks So People Will Sit DownGuest Kimbal Musk · Host Lex FridmanThe chef, Tesla board member, and author of The Kitchen Cookbook talks with Lex Fridman about apartheid South Africa, a broken neck, Zip2, and why a table beats a nightclub.
1:30:41ENThe Model Is a Baked Cake. NYT v. OpenAI Will Likely Cut a Middle PathHost Nathan LabenzTech lawyer Cecilia Ziniti maps the Constitution’s IP clause onto the New York Times lawsuit — and explains why a court is unlikely to order GPT-4 destroyed.
36:22ENOne Attacker and a For Loop: Why Email Is Still the Softest Target in an AI Arms RaceHost Sarah Guo, Elad GilMaterial Security co-founder Ryan Noon on how 2016 election hacks, Google and Microsoft's email duopoly, and large language models are rewriting both sides of cybersecurity.
1:20:49ENA Wafer-Scale Chip So AI Stops Waiting on AmdahlHost Nathan LabenzAndrew Feldman, CEO of Cerebras, tells Nathan Labenz why one 2.5-trillion-transistor die, sparse linear algebra, and a 16-machine supercomputer are a better shape than a GPU cluster.
3:33:04ENAfrica's Poverty Is Made of Laws, Not of PeopleGuest Magatte Wade · Host Lex FridmanSenegalese entrepreneur Magatte Wade tells Lex Fridman how tariffs, Napoleonic codes, and a Cold War wrong turn keep the world's youngest continent poor.
2:46:26ENApple Was a $5 Billion Company in Debt When Tony Fadell Built the iPodGuest Tony Fadell · Host Lex FridmanLex Fridman talks with Tony Fadell, co-creator of the iPod, iPhone, and Nest Thermostat, about the decisions, fights, and luck behind those products.
1:46:49ENAriel Ekblaw on Self-Assembling Habitats and Why the Real Space Cities Will FloatGuest Ariel Ekblaw · Host Lex FridmanThe MIT Space Exploration Initiative director talks swarm tiles, lunar ants, and why Mars is a research station rather than a backup Earth.
2:54:52ENThe Marvelous Proof Still Lives in the MarginHost Lex FridmanLuís and João Batalha, the brothers behind Fermat's Library, talk with Lex Fridman about hidden backstories, a publishing system that buys its own work twice, and how to sit with a paper until it finally clicks.
2:59:57ENThe Farmer With a $50 Phone: Sergey Nazarov on Oracles, Trust, and Hybrid Smart ContractsGuest Sergey Nazarov · Host Lex FridmanThe Chainlink co-founder tells Lex Fridman how definitive truth, oracle networks, and cryptographically guaranteed contracts could leapfrog banks, insurers, and marble-column confidence.
2:31:14ENAnonymity Is a Tool: How a Yale Freshman Built a Campus Where Students Could SpeakGuest Ryan Schiller · Host Lex FridmanRyan Schiller tells Lex Fridman how a silenced seminar, a Gallup number, and a Mac bought off YouTube advice became Librex, an anonymous discussion feed for verified college communities.
1:53:41ENSilvio Micali: Money Is a Shared Belief, and a Blockchain Makes It Common KnowledgeGuest Silvio Micali · Host Lex FridmanThe Turing Award cryptographer and Algorand founder tells Lex Fridman why ledgers, lotteries, and one-way functions matter more than mining.
2:16:07ENAsk What Could Go Right: Jason Calacanis on Robinhood, Loyalty, and Two Checks for TeslaGuest Jason Calacanis · Host Lex FridmanThe angel investor and All-In co-host walks Lex Fridman from a Palo Alto dive bar to GameStop, Silicon Valley’s war on friction, and a friendship that kept a car company alive for twelve extra days.
1:39:29ENElectric engines, 20-nanometer cones, and why Natalya Bailey would skip the first thousand on MarsGuest Natalya Bailey · Host Lex FridmanThe Accion Systems founder walks Lex Fridman from ion physics to orbital debris, chip-made thrusters, and the kind of culture that oozes out of a founder.
1:02:14ENThe 28-year wait: Robert Langer on rejection, polymers, and a thousand studentsGuest Robert Langer · Host Lex FridmanThe MIT bioengineer talks with Lex Fridman about drug delivery, tissue engineering, patents, and the long path from a Folkman hypothesis to Avastin.
1:22:51ENDensity, Not Demos: Sertac Karaman on Robots That Fly and DriveGuest Sertac Karaman · Host Lex FridmanThe MIT roboticist and Optimus Ride co-founder on why sharing space with people is harder than building the machine, and why flying at transportation scale is still the tougher problem.
1:27:13ENFour Levels of Product-Market Fit: First Round's Playbook for B2B FoundersGuest Todd Jackson · Host Lenny RachitskyTodd Jackson of First Round Capital walks through a staged framework for finding product-market fit, the benchmarks for each stage, and the four Ps you can change when you're stuck.
1:21:25ENStrategy Before Goals: Ravi Mehta's Product Strategy Stack, Tinder Lessons and Selective MicromanagementGuest Ravi Mehta · Host Lenny RachitskyFormer Tinder CPO Ravi Mehta on how startups differ from big companies, how to layer mission, strategy, roadmap and goals, and how product leaders can grow.
55:51ENHumble, Customer-Obsessed and Relentless: Inside DoorDash's CultureGuest Keith Yandell · Host Lenny RachitskyDoorDash executive Keith Yandell explains how the company hires for culture, leads through crises, and manages people, from WeDash deliveries to a "how to work with me" document.
1:21:48ENSeeing Like a Designer: Jessica Hische on Logos, Brands and Knowing When Good Enough Is EnoughGuest Jessica Hische · Host Lenny RachitskyLettering artist Jessica Hische walks through her refresh of Lenny's logo and explains how founders can read type, time a rebrand and avoid overspending on brand.
1:36:49ENMission, Retention and an Owl With Attitude: How Duolingo Grew From 3 Million to 200 Million Users Without Paid AdsGuest Gina Gotthilf · Host Lenny RachitskyFormer Duolingo growth lead Gina Gotthilf on organic growth, brand voice, her career B-sides, and why she is betting on Latin American startups.
1:34:36ENFounder Is an Attitude, CEO Is a Craft: Jonathan Lowenhar on Failure Modes, Magic Box Exits and HiringGuest Jonathan Lowenhar · Host Lenny RachitskyEnjoy The Work's Jonathan Lowenhar lays out the skills founders must learn to become CEOs, from avoiding common failure modes to selling a company, hiring, go-to-market and trusting intuition.
1:26:31ENSelling in a Downturn: Bravado CEO Sahil Mansuri on Forecasts, Comp Plans, Retention and Warm IntrosGuest Sahil Mansuri · Host Lenny RachitskySahil Mansuri, founder of the sales community Bravado, lays out how B2B founders should change quotas, compensation, customer focus and deal-closing tactics when the market turns.
1:48:35ENDon't Compete for the 24%: Christopher Lochhead on Designing and Dominating Your Own CategoryGuest Christopher Lochhead · Host Lenny RachitskyThe self-styled Godfather of Category Design explains why the "better" product usually loses, how to reframe a problem with new language, and how to launch with word of mouth.
1:22:34ENName It, Position It, Give It a Personality: A Startup Brand Playbook from Gmail and Square Veteran Arielle JacksonGuest Arielle Jackson · Host Lenny RachitskyArielle Jackson explains how early-stage founders should pick a name, define purpose, positioning and personality, land press coverage, and know when to hire a marketer.
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