Latest Interviews

Juan Carlos Izpisua Belmonte, Altos Labs | All-In Summit 2024

Juan Carlos Izpisua Belmonte, Chamath, Friedberg, Juan Carlos Espucía Belmonte, Juan Carlos Belmonde

Altos Labs, backed by a $3 billion seed investment, is advancing a partial reprogramming strategy that utilizes controlled pulses of Yamanaka factors to reverse aging by restoring closed chromatin conformation without altering the DNA sequence. Early experimental results demonstrate that this approach successfully extends lifespan and reverses specific age-related pathologies in mice and non-human primates, while ex vivo organ treatments show promise for improving transplant viability. With initial clinical applications targeted at acute conditions like liver failure, the company aims to transition from viral vectors to safer, scalable delivery methods to broadly enhance cellular resilience against age-related decline.

How to Use OCaml's Coercion Operator

camels

This session explores standard OCaml's subtyping and coercion mechanisms, emphasizing how the `:>` operator enables compile-time type checks without runtime overhead or data reallocation. The discussion details value inclusion principles for polymorphic variants, recursive subtyping relations, and the specific constraints imposed by private type abbreviations to enforce invariants. While confirming that list coercions remain free at runtime, the presentation notes upcoming analysis of variant annotations and object types in future sessions.

How To Find A Co-Founder | Startup School

Harj Taggar

The event outlines a comprehensive strategy for startup founders to secure co-founders who can double execution capacity, enhance quality control, and provide essential emotional resilience. It emphasizes selecting partners based on stress tolerance and aligned goals rather than specific technical skills, recommending equal equity splits and a trial period to mitigate the risks of role disputes or work ethic mismatches. By leveraging networks for organic connections and maintaining regular communication, founders can avoid common breakup causes and build a durable team capable of competing with established entities.

How To Convert Customers With Cold Emails | Startup School

Aaron Epstein

This event details a data-driven outreach framework where founders must personally execute high-volume email campaigns using warm introductions or targeted cold strategies to secure B2B customers. The speaker outlines a specific funnel architecture that requires sending dozens of daily messages while applying seven principles of effective copy, such as humanized tone, deep personalization, and clear calls to action, to maximize response rates. By analyzing case studies of both failed and successful campaigns, the presentation emphasizes that manual, founder-led execution is essential for building initial traction before any automation is introduced.

East Meets West: How Asian Storytelling is Influencing a Global Audience | Asia Summit 2023

Curtis Chin, Randall Park, Guneet Monga, John Penotti, Adele Lim

Speakers at this fragmented panel discussion prioritized global market stability and the need for diverse representation, specifically advocating for more directors of color and indigenous storytelling in the film and television industries. Despite the incoherent nature of the source material, the dialogue identified critical production challenges including high costs, financing difficulties, and the necessity for deeper investment in development. The session concluded with a shared intent to foster authentic narratives and build community structures to support emerging creators before they enter the industry.

Sales pre-PMF should be done by the founders.

Early-stage B2B startup founders must personally drive sales efforts prior to achieving product-market fit to validate their business models effectively. Because this pre-PMF selling requires entrepreneurial vision and a tight feedback loop with product development, external sales hires often fail to replicate these critical dynamics. Relying on external sales teams before validation is identified as a suboptimal strategy that risks the venture's ability to succeed later.

Enterprise Sales | Startup School

Pete Koomen, Pete Kuhman

Optimizely co-founder Pete Kuhman outlines a rigorous enterprise sales framework for technical founders, emphasizing that selling before product-market fit requires experimentation with targeted prospecting and personalized outreach. The strategy prioritizes deep discovery during initial calls, uses product-specific narratives to demonstrate value during demos, and treats pricing as a signal of problem severity rather than a fixed metric. By actively managing implementation roadmaps to ensure customer adoption and navigating procurement hurdles with internal champions, founders can transform sales skills into a transferable superpower for fundraising and hiring.

The artistry is actually in that interface between the human and the technology itself.

The speaker argues that while artificial intelligence will significantly assist with backend development and API writing, it cannot fully automate the creative interface between humans and technology where true software artistry resides. By leveraging strongly typed systems and natural language to translate requirements into specifications, AI serves as a powerful tool that augments human productivity rather than replacing it. Ultimately, the event emphasizes that defining the fundamental scope of products remains a critical human responsibility that transcends mere code generation.

Programming with OCaml's Local Mode | OCaml Unboxed

Jane Street Doe Camel

A Jane Street team member demonstrates practical limitations of the OCaml "Locals" region-based memory management system while optimizing the `best_of_prime_widgets` function to avoid heap allocation. To resolve type mismatches where local lists must escape their regions, the implementation employs a custom zero-overhead `global` wrapper type alongside a recursive map function annotated with `exclave` constraints. Although the solution successfully maintains local allocation for list structures while treating elements as global, the speaker identifies these manual workarounds as sharp corners requiring future improvements through mode polymorphism.

The Modi Raj 1: The chaiwallah's son

Modi, Avantika Chalkoti, Jitendra Chauhan, Nilanjan Mukhopadhyay, R. Balashankar, Shankar Singh Vaghela, Yashwant Sinha

This podcast series examines the trajectory of Narendra Modi from his impoverished upbringing in Gujarat and early induction into the Hindu nationalist RSS to his ascent as India's longest-serving Prime Minister. While Modi successfully orchestrated the nation's economic rise to fifth-largest global economy and cultivated a distinct personal brand, his tenure is simultaneously scrutinized for fueling Hindu supremacism and threatening democratic norms through divisive rhetoric. The narrative culminates in an analysis of how Modi's recent electoral defeat, which forced him into coalition governance, challenges his previous "strongman" style and sets the stage for investigating pivotal events like the 2002 Gujarat riots.

Probably not.

Founders of free consumer apps are advised to avoid paid user acquisition because it typically generates only temporary metric spikes while failing to address underlying growth limitations. Sustainable scaling instead relies on discovering non-obvious, low-cost distribution channels that bypass the need for expensive marketing campaigns. Paid spending is reserved exclusively for strictly bounded experiments with predefined learning objectives, serving as a tool for insight rather than a strategy for long-term revenue generation.

Pitfalls with Tail Calls and Locals in OCaml | OCaml Unboxed

Goldfirere

Jane Street researchers developed a "local mode" for their OCaml compiler to optimize memory allocation on the stack, but discovered that standard tail call optimization causes "local value escapes" errors when recursive closures capture variables from a region that ends immediately before the call. To address this, the team introduced a "regional" sub-mode that permits specific values to escape one region boundary, allowing tail-recursive functions to maintain $O(1)$ stack space without explicit `non-tail` annotations, though passing these values through intermediate functions can strip this status and force $O(n)$ allocations. The developers acknowledge that current workarounds like explicit annotations or variable indirection are cumbersome for practical use, prompting a push for better compiler heuristics to automate safe tail calls in future upstream releases.

Japan had no military. But didn’t surrender – Richard Rhodes

Richard Rhodes

By August 1945, a severely depleted Japan faced a convergence of devastating factors including Soviet invasion forces and the deployment of atomic weapons, which collectively shattered its remaining military capacity. While President Truman sought to limit Soviet influence by accelerating the bombings, historical evidence indicates that Stalin's rapid intervention in Manchuria was the decisive variable forcing Japanese surrender rather than the nuclear strikes alone. This multi-front collapse marked a permanent shift in warfare toward the systematic targeting of civilian populations and set the stage for the immediate Soviet prioritization of their own nuclear program under Premier Stalin.

Sean Carroll: General Relativity, Quantum Mechanics, Black Holes & Aliens | Lex Fridman Podcast #428

Sean Carroll, Lex Fridman

Theoretical physicist Sean Carroll synthesizes his extensive research on general relativity, black hole thermodynamics, and the holographic principle to explain how gravity emerges from the curvature of spacetime and how information paradoxes challenge our understanding of quantum mechanics. Expanding into cosmology and complex systems, he examines dark energy, the Many-Worlds Interpretation of quantum mechanics, and the nature of entropy as the driver of complexity and life in a poetic naturalist framework. Finally, Carroll defends Einstein's intellectual legacy while addressing contemporary questions regarding artificial intelligence, the Fermi Paradox, and the philosophical boundaries of scientific inquiry.

What a GPT-7 Intelligence Explosion Looks Like | Carl Shulman

Carl Shulman

The discussion outlines mitigation strategies for early detection of hostile AI motivations alongside a defined productivity threshold where AI contributions match or exceed human researcher output. It details operational mechanisms such as voting algorithms, cost-effective scaling of smaller models, and self-generated curricula that enable intelligence explosions without relying solely on brute force capability. These approaches combine hard physical constraints with empirical verification to ensure safety while accelerating innovation through distributed compute and structured learning environments.