Latest Interviews

Beyond roads, bridges, and tunnels: the megatrends shaping infrastructure investments

Teresa Mattamouros, Alyssa Nathan

The global infrastructure sector has expanded from traditional physical assets to include critical data centers and renewable energy projects, driven by a fourfold demand for decarbonization, digitization, deglobalization, and demographic shifts that currently outpace the trillion-dollar gap between public spending and estimated needs. Legislative frameworks like the U.S. Inflation Reduction Act have accelerated this transition by unlocking over $400 billion in private capital for clean power and manufacturing, contrasting with Europe's more rigid, top-down regulatory approach while offering investors inflation-protected returns and portfolio diversification. Despite these opportunities, the long-duration nature of these assets exposes them to risks from geopolitical instability and interest rate fluctuations, which may complicate refinancing and delay large-scale capital commitments.

Nubank’s David Vélez: Entrepreneurs can help solve Brazil’s biggest challenges

David Vélez, John Waldron

David Velez and Nubank's co-founders built the region's largest bank by value by targeting structural inefficiencies in Latin America's unbanked markets, transforming a decade of macroeconomic volatility into a growth advantage. The company scaled across Brazil, Mexico, and Colombia by embedding a culture of user fanaticism and deploying product-led financial literacy tools that achieved industry-leading NPS scores surpassing global tech giants. Following a $30 billion pre-IPO valuation and backing from Berkshire Hathaway, Velez has now committed the majority of personal wealth to the Giving Pledge to further expand educational leadership and private-sector impact in the region.

Fielding Exceptional Fan Experiences: Holly O’Neill & Dallas Cowboys EVP Charlotte Jones

Holly O’Neill, Charlotte Jones

Entering the Dallas Cowboys in 1989 during a financial crisis, Charlotte Jones leveraged her fashion background and a family mandate to transform the franchise into a $9 billion enterprise over three decades. As the first female chairman of the NFL Foundation, she prioritized a 355-day engagement strategy and gender-inclusive leadership to compete with home streaming and cultivate deep fan affinity through initiatives like the "The Star" headquarters. Jones continues to drive the organization's digital evolution by integrating AI and player-centric data, ensuring the team remains relevant as the industry pivots toward immersive streaming experiences.

David Booth on being an index pioneer, working with Nobel laureates, & investing through uncertainty

David Booth, Raj Mahajan

Founded by David Booth in 1981, Dimensional Fund Advisors has grown to manage $680 billion by applying science-based strategies rooted in theories from Nobel laureates like Eugene Fama and Robert Merton. The firm distinguishes itself as the industry's largest active ETF issuer by prioritizing the management of uncertainty over market forecasting and lowering transaction costs through disciplined trading execution. Beyond its financial operations, Booth's governance integrates rigorous academic oversight, and his historic philanthropy has significantly elevated the University of Chicago Booth School of Business while preserving key historical artifacts like the original rules of basketball.

Apple Vision Pro: Startup Platform Of The Future?

Diana, Jared

At the event, YC's Diana analyzed the Apple Vision Pro's transition to high-resolution video see-through technology and spatial computation, positioning it as a productivity-first platform with a hardware architecture comparable to self-driving cars. She contrasted this with Meta's game-focused approach, emphasizing that successful adoption requires founders to build deep, irrational commitment to overcome early "iPhone moment" limitations regarding app ecosystems and user experience. Drawing parallels to the five-year trajectory of mobile computing, the discussion advised investors to fund developers addressing high-density workflows now, predicting a similar evolution from niche tools to mass-market transformative startups.

Shifting supply and demand dynamics buffer oil market

Daan Struyven, Alison Nathan, Don Stryven

Brent crude currently trades near $80 per barrel with a modest geopolitical risk premium, supported by U.S. supply dominance and OPEC+ strategies to avoid extreme price spikes that could hinder Saudi Vision 2030. While global demand faces downside risks from China, growth in India and the United States keeps prices range-bound, with refined products and gasoline expected to hit summer peaks of $3.70 per gallon due to refining tightness. Simultaneously, the market anticipates a structural shift toward critical minerals like copper as EV penetration rises, while European natural gas markets face potential oversupply by 2026 and gold prices rise on expectations of lower U.S. interest rates.

OCaml Locals Save Allocations | OCaml Unboxed

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Jane Street demonstrates how a specialized OCaml compiler reduces memory allocation by introducing the `local` keyword, which restricts value lifetimes to specific function and loop regions. This approach requires replacing standard library functions like `list.iter` with custom implementations that explicitly label arguments as `local` to prevent value escapes, achieving a 50% reduction in word allocations in benchmark tests. Further refinements with the `exclave` keyword and strict type inference drive allocation overhead to near-zero, thereby minimizing garbage collection latency for the experimental feature planned for future upstream integration.

Text to Video: The Next Leap in AI Generation

Anjney Midha, Andreas Blattmann, Robin Rombach

Released on November 21st, Stable Video Diffusion is a state-of-the-art open-source model that generates short video clips from single input images by prioritizing the learning of complex physical properties like 3D consistency and camera movement. The architecture employs diffusion methodology over autoregressive methods to optimize perceptual details and utilizes LoRA adapters for scalable control of camera motion, while training strategies focused on temporal dynamics and specific 3D orbit refinement to achieve surprising reasoning capabilities in as few as 2,000 iterations. This release continues the team's philosophy of driving innovation through algorithmic efficiency rather than sheer compute volume, having already catalyzed a rapid ecosystem of community experimentation and set a roadmap for longer sequences and future audio integration.

The life of Alexei Navalny

Alexei Navalny, Sam Colbert, Pete Naughton, Ksenia Barakovskaya, Lika Kremer, Weidong Lin, Darren Ng, John Shields

Russia's primary opposition leader Alexei Navalny, confirmed poisoned with the state-exclusive nerve agent Novichok, died in solitary confinement at penal colony IK6 after years of systematic physical torture by Russian authorities. Despite enduring severe deprivation, including forced standing sleep and isolation from the outside world, Navalny maintained a defiant stance against the Kremlin's strategy of intimidation until his death in prison. The event underscores the Russian state's continued suppression of dissent, having recently sentenced other opposition figures to decades in prison to dismantle democratic movements.

SpaceX’s Gwynne Shotwell on the future of space travel

Gwynne Shotwell, Susie Scher

SpaceX CEO Gwynne Shotwell outlines an aggressive strategy to establish permanent human settlements on the Moon and Mars within the next decade, relying on the rapid, full-reusability of the Starship vehicle to slash costs and enable round-trip interplanetary travel. Complementing this hardware revolution, the Starlink satellite network currently serves over two million customers and achieved rapid deployment in conflict zones like Ukraine, despite facing significant regulatory hurdles that often lag behind technical innovation. To sustain this pace, the company enforces a culture prioritizing innate intelligence and relentless operational efficiency, with Shotwell leveraging her engineering background to bridge the gap between complex technical visions and immediate customer needs.

2024: the year of elections

Richard Haass, Timothy Garton Ash, Allison Nathan

Richard Haass and Timothy Garten-Ash analyze 2024 as a pivotal global year marked by democratic backsliding and a surge of right-wing populism across Europe and the United States. They argue that the U.S. presidential election serves as the decisive geopolitical event, where the policy divergence between an alliance-first Biden and an isolationist Trump will fundamentally shape the security architecture of NATO and the trajectory of the Russia-Ukraine conflict. These shifts carry profound implications for European integration, Taiwan's defense, and the United Kingdom's future relations with the EU, as Western uncertainty may embolden adversaries like Putin and undermine the credibility of international commitments.

The Truth About Building AI Startups Today

Gary, Jared, Harj, Diana

In the debut episode of "The Light Cone," Y Combinator partners Jared, Harj, Diana, and Gary analyze the massive influx of generative AI startups, noting that half of the Summer 2023 batch leverages large language models due to reduced barriers for young founders. The panel identifies critical success strategies such as automating mundane "boring" workflows, embedding intelligence into existing user interfaces rather than building new chat tools, and leveraging specialized open-source models for data privacy. They also highlight the emerging security sector for preventing prompt injections and urge founders to develop complex, custom business logic to avoid displacement by foundational models.

Drones, Data, and Deterrence: Technology's Role in Public Safety

David Ulevitch, Garrett Langley, Kevin McMahill, Catherine

Flock Safety and Las Vegas law enforcement, led by Sheriff Kevin McMahill, have pioneered an integrated public-private safety network combining autonomous drones, gun-detection, and a localized camera grid to solve roughly 2,200 daily crimes while reducing officer-involved shootings from 25 to 6 annually. This reactive model prioritizes rapid response and data transparency, evidenced by Las Vegas achieving a 90% homicide clearance rate and communities in marginalized areas advocating for the technology's role in accountability. Backed by significant investment from Andreessen Horowitz, the system operates across 4,000 U.S. cities to deliver situational awareness within 30 seconds, effectively triaging 9,911 calls per minute and enabling near-total clearance of offenses in pilot programs.

Inferring Locality in OCaml | OCaml Unboxed

The OCaml compiler utilizes an internal allocation discipline that infers local versus global modes for variables and parameters to enable stack-based memory usage and reduce garbage collection overhead. This system prioritizes local inference for arguments while defaulting return values to global to ensure maximum compatibility, with integers serving as a special case that can safely cross mode boundaries under specific annotations. Although this framework enhances performance, current limitations such as standard library functions lacking locality awareness and the need for explicit type signatures to trigger safety checks continue to shape its practical application.

XPO Executive Chairman Brad Jacobs on building billion-dollar companies

Brad Jacobs, Matt McClure

Brad Jacobs, who holds the record for founding five multi-billion dollar companies and has generated over $55 billion in investor value, currently serves as executive chairman of supply chain entities XPO Logistics, GXO, and RXO. His investment philosophy targets fragmented, high-GDP sectors ripe for consolidation, employing a "responsibly fast" operational tempo and direct M&A negotiations to achieve cash flow recoupment within two to four years. Jacobs combines this aggressive deal-making with a "tech-forward" strategy that leverages AI for dynamic logistics optimization while prioritizing the hiring of individuals with higher intelligence and intrinsic motivation to sustain resilient, "all-weather" business models.