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14:47ENBuild Your Own Types: What Bjarne Stroustrup Learned from Simula, Fortran and LispGuest Bjarne Stroustrup · Host Lex FridmanThe creator of C++ traces how Simula's user-defined types shaped his language, and why he builds for constrained, long-lived systems.
2:04:21EN"AI Doctors Are Here": A Father's Account of Fighting His Son's Burkitt Leukemia With GPT-5 Pro and Gemini 3Host Nathan LabenzNathan Labenz recounts the first three weeks of his 6-year-old son's cancer diagnosis and how frontier models served as second opinions, bedside co-pilots and relapse planners.
24:08ENIntelligence Is Not Just Prediction: David Ferrucci on Explanation, Persuasion and Shared MeaningGuest David Ferrucci · Host Lex FridmanThe lead of IBM's Watson team argues that predicting well is only half of intelligence, and that being understood by others is the other half.
22:03ENRunning the Drake Equation: Lex Fridman's Estimate of Alien Civilizations, From 0.7 in the Milky Way to Trillions in the UniverseHost Lex FridmanLex Fridman walks through each parameter of the Drake equation with optimistic, pessimistic and personal estimates, then argues the real lesson is how little we understand about intelligence and communication.
1:26:42ENInside Block's AI-Native Bet: Goose, Functional Orgs and Throwing Code AwayGuest Dhanji R. Prasanna · Host Lenny RachitskyBlock CTO Dhanji Prasanna explains how a reorg, an open-source agent and a learning-first culture made the company unusually AI-forward.
1:12:12ENModels Are Grown, Not Built: What Anthropic's Interpretability Research Sees Inside ClaudeHost Lenny RachitskyAnthropic researcher Emmanuel Ameisen explains how studying a language model's intermediate computations reveals concepts, plans and surprising quirks, and why that matters for alignment.
57:11ENFrom Artifact to Organism: Microsoft's Asha Sharma on Products That Learn and an Agentic SocietyGuest Asha Sharma · Host Lenny RachitskyMicrosoft's AI platform product chief explains why products are becoming living systems tuned by post-training, why interfaces are shifting toward code and composability, and how agents may reshape the org chart.
1:32:41ENYou Can Patch a Bug but You Can't Patch a Brain: Why AI Guardrails FailHost Lenny RachitskyHackAPrompt's Sander Schulhoff explains why prompt injection and jailbreaking remain unsolved, why the guardrail industry is selling false comfort, and what organizations can do instead.
1:42:57ENFive Seconds, Real Stakes: Matthew Dicks on How to Tell Stories People RememberGuest Matthew Dicks · Host Lenny RachitskyThe 59-time Moth Story Slam winner and author of Storyworthy explains the single-moment structure of good stories, how to use them at work, and how to calm stage nerves.
40:58ENBuilding AI Products When the Ground Keeps MovingHost Lenny RachitskyOpenAI's Kevin Weil and Anthropic's Mike Krieger discuss how AI product management differs from traditional software, from evals and enterprise buyers to computer use, reasoning models, and proactive agents.
1:12:19ENThe Three W's: A Practical Framework for Growing as a Product ManagerGuest Vikrama Dhiman · Host Lenny RachitskyGojek's head of product Vikrama Dhiman explains what separates fast-rising PMs from stalled ones, and how to move into product from another discipline.
23:11ENNick Bostrom on Superintelligence: Why the Upside Deserves as Much Attention as the RiskGuest Nick Bostrom · Host Lex FridmanIn a clip from the Lex Fridman Podcast, Oxford philosopher Nick Bostrom defines superintelligence, discusses intelligence explosions, and sketches what a good AGI future might look like.
22:17ENWhat Is Real? Lee Smolin on Realism, Science and StorytellingHost Lex FridmanThe theoretical physicist explains why he believes in a world independent of our perception, why he doubts there is a single scientific method, and where realism meets quantum mechanics.
1:27:51ENOptimism, Laziness and "What If": Lessons from the Man Behind Google DocsGuest Sam Schillace · Host Lenny RachitskySam Schillace, who created Writely (later Google Docs) and now helps lead AI work at Microsoft, on disruptive ideas, user laziness, failing on purpose, and where software is headed.
1:12:18ENThe Lego Inside Notion: Ivan Zhao on Lost Years, Small Teams, and Horizontal BetsHost Lenny RachitskyIvan Zhao explains how Notion survived its lost years, stayed lean, corrected a non-Lego product detour, and built a horizontal platform now being reshaped by AI.
1:35:10ENTen Growth Tactics That Never Work, According to Elena VernaGuest Elena Verna · Host Lenny RachitskyGrowth leader Elena Verna runs through the growth plays she sees companies waste money on, the three frameworks she trusts instead, and her case for career optionality.
1:42:11ENTwenty Agents, 1.2 Humans: Inside SaaStr's AI-Run Sales TeamHost Lenny RachitskyJason Lemkin explains how SaaStr replaced a ten-person go-to-market team with AI agents, what it took to train them, and who survives the shift.
1:09:38ENRyan Hoover on Experiments, Launches and the Mask Every Founder WearsGuest Ryan Hoover · Host Lenny RachitskyThe Product Hunt founder and Weekend Fund investor talks about starting small, raising money for a reason, launching well, his own regrets and how he now invests.
1:22:51ENCold DMs, Dinner-Party Communities, and the Case Against Jobs-to-Be-DoneHost Lenny RachitskyAarthi Ramamurthy and Sriram Krishnan on techno-optimism, relationship-driven careers, content creation, imposter syndrome, executive reviews, and why real products are trade-offs.
1:01:13ENNLX Is the New UX: Microsoft's Aparna Chennapragada on Designing for AgentsGuest Aparna Chennapragada · Host Lenny RachitskyMicrosoft's chief product officer explains how she is building AI products a year ahead of the market, why conversation is a designable interface, and what stays the same for product builders.
15:43ENInside RIDER: The Rugged Black Box Behind MIT's Large-Scale Driving StudyGuest MIT-AVT · Host Lex FridmanA walkthrough of the data-collection device MIT-AVT uses to record drivers and vehicles in semi-autonomous cars month after month.
1:02:51ENThe Unreasonable Playbook Behind Gojek: Super Apps, Cash Vaults, and Brand as a MoatHost Lenny RachitskyKevin Aluwi explains how Gojek scaled across Southeast Asia by building brand, running brutal operations, and rejecting copycat strategy.
56:42ENInside Gong's Product Machine: Pods, Design Partners, and Fast 51/49 DecisionsHost Lenny RachitskyEilon Reshef explains how Gong pairs autonomous product pods with design partners, makes quick decisions, and builds AI products with measurement and expertise.
37:18ENFrom Intelligent Copilots to Aurora: Sterling Anderson on Shared Control and Building a Self-Driving CompanyHost Lex FridmanA guest lecture in MIT's 6.S094 course tracing Anderson's path from shared human-machine control research, through Tesla Autopilot, to co-founding Aurora.
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