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1:00ENHow a Prism Separates White LightRefraction and dispersion split light into spectral colors.
59:36ENGeoff Charles on Product Teams, Sprint Velocity and Strategy at RampGuest Geoff Charles · Host Harry StebbingsRamp’s product leader explains customer discovery, two-week sprints, reusable systems and hiring for execution.
0:34ENDara Khosrowshahi on Why He Joined UberA conversation with Daniel Ek reframed an offer Dara Khosrowshahi initially wanted to decline.
1:25:06ENTooey Courtemanche on Procore's Long Road to Growth and the Work of LeadingGuest Tooey Courtemanche · Host Harry StebbingsThe construction software founder discusses surviving a slow market, building a product platform, delegating and balancing a company with family life.
59:24ENIf You Only Trust What You Can See, You Miss Most of the UniverseGuest Lisa Randall · Host Lex FridmanHarvard physicist Lisa Randall talks with Lex Fridman about dark matter, dinosaur extinctions, the LHC, and why a theory is only as good as the measurement that can kill it.
13:24ENRefraction Questions: Bending, Birefringence and Phase VelocityA wave-based explanation of several surprising optical effects.
1:22:59ENIf Your Agent Is Right 80% of the Time, Ten Steps Leave You With 10%Host Nathan LabenzImbue CTO Josh Albrecht tells Nathan Labenz how a 27-person, pre-product research company is putting $200 million and 10,000 H100s toward agents that can actually finish a long job.
1:03:42ENDominik Richter on Building HelloFresh and Choosing a Path to LiquidityGuest Dominik Richter · Host Harry StebbingsThe HelloFresh founder discusses operational complexity, capital allocation, venture funding and the trade-offs of an early IPO.
18:29ENOpenAI's 2023 Leadership Crisis, Q* Speculation and Synthetic DataMatthew Berman, Andrew Ross Sorkin, Elon Musk · Forward FutureMatthew Berman connects Sam Altman's return, an Elon Musk interview and Nathan Lambert's discussion of synthetic training data, separating reported events from his own theories.
5:17ENTesting an AI Agent That Operates a ComputerMatthew Berman · Forward FutureIn a 2023 demonstration, Matthew Berman installs OthersideAI's Self-Operating Computer and watches it use the screen, mouse and keyboard to open apps and navigate YouTube.
38:54ENNVIDIA’s Long Road from Graphics to AI ComputingJensen Huang, Chris Malachowsky, Mark Stevens, Alfred Lin, Andrew NgFounders and investors revisit early setbacks, RIVA 128 and the move beyond gaming.
55:34ENAndrew Hunter on Performance Engineering for Low-Latency SystemsYaron Minsky, Andrew Hunter · Jane StreetWhy small optimizations pay at hyperscale, why trading latency is harder to measure, and how profiling, tracing, language design and hardware fit together.
1:12:43ENGuillaume Cabane on Growth Experiments, Hiring and Acquisition EconomicsGuest Guillaume Cabane · Host Harry StebbingsThe growth adviser explains how he tests channels, evaluates customer acquisition and builds teams, while discussing the limits and risks of automated outreach.
1:15:39ENAfter 20 Years of Frontend, v0 Wrote Better Code Than Guillermo Rauch DidHost Nathan LabenzThe Vercel CEO tells Nathan Labenz why every product needs ghost text, why Software 2.0 will ossify the old stack, and why betting against open source is still the expensive mistake.
35:16ENWhat Was Known About Q* in 2023—and What Was SpeculationMatthew Berman, Sam Altman, Andrej Karpathy · Forward FutureMatthew Berman surveys rumors, reasoning papers and self-play analogies after OpenAI’s leadership crisis, with important limits on what was verified.
1:06:44ENKeith Rabois and Mike Shebat on Work Ethic, Startup Culture and Founder JudgmentGuest Keith Rabois, Mike Shebat · Host Harry StebbingsThe investor and Traba CEO discuss demanding schedules, hiring, advice and the trade-offs behind building an ambitious company.
0:25ENA Claim About Fiji Water and Shipping EmissionsGuest Ryan PetersenRyan Petersen compares transport modes without a full lifecycle analysis.
7:48ENTesting Dolphin 2.2 Yi 34B on Coding and Reasoning TasksMatthew Berman · Forward FutureMatthew Berman runs a quantized Yi fine-tune through informal coding, writing and logic prompts in November 2023, with uneven results.
1:39:02ENMost Things Suck. The Good Ones Change Your Life.Guest Michael Malice · Host Lex FridmanOn a Thanksgiving pirate special, Michael Malice and Lex Fridman range from mantis shrimp and roast funerals to 67 shaving soaps and why cynicism is a form of giving up.
33:23ENAI Leaders Debate Open Models, Pricing and the Future of SearchGuest Emad Mostaque, Des Traynor, Jeff Seibert, Yann Lecun, Richard Socher, Cris Valenzuela, Douwe Kiela, Tomasz Tunguz, Miles Grimshaw, Christian Lanng · Host Harry StebbingsA compilation of separate interviews brings together competing 2023 predictions about model economics, assistants and the largest technology companies.
27:44ENQ* and Reasoning Research: A Speculative 2023 AnalysisAI Explained connects public papers and reporting while acknowledging that the project’s details are unknown.
1:06ENRyan Petersen on Investing in Founders Seeking a ComebackGuest Ryan Petersen · Host Harry StebbingsAn investor discusses motivation, overlooked talent and due diligence.
1:01:17ENJeff Seibert on Product Pivots, AI Infrastructure and Angel InvestingGuest Jeff Seibert · Host Harry StebbingsThe Digits founder discusses decisive product pivots, the risks of thin AI applications and the difference between paper gains and cash returns.
1:53:10ENThe Board Member Who Had Never Used GPT-4Host Nathan LabenzA GPT-4 red teamer on the safety gap he saw a year before OpenAI's board fired Sam Altman.
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