Latest Interviews

Why are music festivals so expensive?

Jenny Jordan, Lach Mitchell, Tom Standage, Joe Pine

Large-scale music festivals have evolved from modest gatherings into billion-dollar operations dominated by corporate giants like Live Nation and AEG Live, driven by a shift where artist fees and infrastructure costs have surged exponentially. While ticket prices have risen fifty-fold since the 1970s, attendance has stagnated or declined as consumers increasingly prioritize immersive, transformative experiences over headline acts alone. In response, the market is bifurcating between massive corporate festivals leveraging economies of scale and independent events that distinguish themselves through unique, immersive identities to secure loyal followings.

Adora Cheung - How to Set KPIs and Goals

Adora Cheung

This framework defines Key Performance Indicators as quantitative feedback mechanisms where startups must select a single primary metric, such as monthly recurring revenue or active user growth, to validate product-market fit. Founders are advised to pair this core metric with three to five secondary indicators while aiming for a weekly growth rate of 5% to 10% to ensure exponential progress. By tracking these targets visually and treating weekly misses as diagnostic data rather than failures, entrepreneurs can rapidly iterate on their strategies to achieve sustainable scaling.

Eric Migicovsky - How to Talk to Users

Eric Migicovsky, Eric Mitryakovsky

Y Combinator partner Eric Mitryakovsky, drawing on his experience founding Pebble, outlines a rigorous framework for founders to validate market demand by personally conducting user interviews that avoid pitching and hypothetical questions. He recommends identifying high-value customers by quantifying the cost, frequency, and budget authority of their specific problems while utilizing guerrilla acquisition tactics like face-to-face meetings at industry events. To objectively measure progress toward product-market fit, the strategy emphasizes tracking the 40% "very disappointed" metric and validating features through pre-payment or credit card data rather than relying on user feedback or compliments.

Kevin Hale - How to Evaluate Startup Ideas

Kevin Hale

Y Combinator is revising its Startup School curriculum to prioritize narrative construction and hypothesis validation for early-stage founders who lack the conviction to quit their jobs or identify viable pivots. The program reframes startups as entities designed for rapid scaling by teaching investors how to evaluate a problem, solution, and unfair advantage framework, specifically addressing the "solution in search of a problem" pitfall. Through case studies of companies like Wufoo and Reddit, the event demonstrates how validating three core components and securing miracle beliefs can enable funding even for ideas with no code or traction, setting the stage for future user testing cycles.

Goldman Sachs at 150: Part 6 – Going Global (1989)

In the 1980s, Goldman Sachs strategically pivoted from a U.S.-centric firm to a global powerhouse by establishing London as its European hub and securing the British Gas privatization to link local markets with international capital. Under the leadership of John Weinberg, who demonstrated unwavering client commitment during the 1987 Black Monday crash, and successors like Bob Rubin and Stephen Friedman, the firm modernized its operations by integrating quantitative risk management and recruiting top-tier mathematical talent. This transformation, supported by a flat, collaborative culture and a focus on hiring diverse talent, established a three-pillar framework of people, culture, and strategy that defined the firm's dominance in global finance over the following three decades.

Goldman Sachs at 150: Part 5 – Takeoff (1976)

John Whitehead, John Weinberg

Since 1985, the firm has navigated six or seven orderly CEO transitions, a succession pattern John Whitehead and John Weinberg established by codifying core principles to scale from a partnership of 800 employees to a global institution of 8,000. Their 1976 co-leadership era successfully separated strategic development from client relationship management while maintaining a "white knight" reputation for defending clients against hostile takeovers. This enduring culture prioritizes long-term trust and the client-first ethic as the primary assets ensuring the organization's 150-year longevity.

Goldman Sachs at 150: Part 4 – Changing Times (1969)

Gus Levy, Sidney Weinberg, Bob Mnuchin, Bob Rubin, Steve Friedman

In the early 1960s, Gus Levy redefined Goldman Sachs by transitioning it from a conservative investment bank into a trader-led market maker capable of handling massive institutional volume. His innovative block trading strategies and a culture of relentless accessibility navigated the firm through a 1970s liquidity crisis, establishing a legacy of institutional leadership that endured beyond his 1976 death. This structural shift not only secured the firm's position as a Wall Street hub but also instilled a permanent culture of vigilance and high standards that continues to shape Goldman Sachs' operations.

Goldman Sachs at 150: Part 1 – Beginnings (1869)

Emily Beynon

Founded in 1869 by immigrant Marcus Goldman and later expanded by his son-in-law Samuel Sachs and son Henry Goldman, the firm evolved from a niche commercial paper dealer into a dominant investment bank through a unique leadership dynamic and aggressive market innovation. Pioneering critical financial practices such as the underwriting of non-utility retailers and the development of the Price-to-Earnings ratio, the partners successfully floated major companies like Sears and Macy's while navigating competition from established giants like J.P. Morgan. This strategic combination of calculated risk-taking and client-focused ingenuity transformed the organization from a basement operation into a globally influential institution that maintained its core values despite significant operational changes over the first century of its existence.

The Economics of Term Sheets

Scott Kupor

This presentation dissects economic term sheet mechanics using hypothetical venture firms Haiku and Indigo to illustrate how varying liquidation preferences and option pools directly impact founder ownership. By contrasting Haiku's participating 1x preference with Indigo's non-participating structure, the analysis demonstrates that while Indigo offers less immediate dilution, Haiku's smaller capital injection and option pool size yield a different risk-reward profile for the founding team. The session concludes by framing the choice between these competing $2 million versus $4 million offers as a strategic calculation of runway extension versus long-term upside, pending a future discussion on governance rights.

Why Your Mortgage Is So Complicated: The History and Opportunity of the Modern Mortgage

Alex Rampell

Following the Great Depression's widespread defaults, New Deal reforms replaced volatile balloon-payment structures with the modern fixed-rate mortgage and established government-backed entities like Fannie Mae and Freddie Mac. The current 2018 industry structure relies on a fragmented chain of intermediaries, including national banks, brokers, and servicers, where single loans involve dozens of parties and generate significant fees through complex securitization. Critics argue this 100-year-old model is inefficiently expensive, suggesting that removing unnecessary middlemen and digitizing manual processes could substantially reduce consumer costs.

Safe at Any Speed: Building a Performant, Safe, Maintainable Packet Processor

Sebastian Funk, JOSE ARRIETA

Jane Street engineers optimized their OCaml-based market data distribution system to handle NASDAQ's peak load of 4 million messages per second while maintaining zero-allocation on critical paths to avoid garbage collection delays. By leveraging PPX preprocessors, immediate integer options, and a domain-specific language for protocol generation, the team reduced per-message processing latency from five microseconds to under 750 nanoseconds. This approach demonstrates that strict single-core, low-latency performance targets can be achieved with high-level functional languages through aggressive inlining and careful memory management rather than resorting to lower-level systems code.

MIT 6.S093: Introduction to Human-Centered Artificial Intelligence (AI)

The presentation argues that learning-based artificial intelligence will supersede optimization models but requires "machine teaching" and continuous human supervision to ensure safety, fairness, and explainability. Key strategies include active learning algorithms that minimize data requirements, reward engineering to align systems with societal values, and uncertainty signaling through ensemble disagreements to trigger human intervention in high-stakes domains. These human-AI collaborations aim to overcome persistent perception challenges in face and emotion recognition while scaling autonomous technologies to societal levels where safety and symbiosis are paramount.

How to Get and Test Startup Ideas - Michael Seibel

Michael Seibel

This session challenges the notion that startup ideas must be perfect at inception, using Justin Kan's co-founding of Twitch to illustrate how prioritizing deep personal connection to a problem over the concept itself drives resilience. Kan advises founders to maintain "problem books" rather than idea logs, validate issues through direct community impact, and rigorously handpick early users to test minimum viable products. Ultimately, the discussion emphasizes that successful entrepreneurs must fall in love with the customer's pain point rather than their initial product, ensuring the team remains uniquely qualified to solve a specific, verified need.

Why is chicken so cheap? | The Economist

David Speller

Driven by the 1940s "Chicken of Tomorrow" competition, the global poultry industry now sustains a population of 23 billion birds through intensive genetic breeding that compresses broiler lifespans to 38 days. Consultant David Speller exemplifies this scale by managing millions of genetically uniform chickens with automated environmental controls, prioritizing rapid growth over natural maturity to meet high-volume, low-cost consumer demand. While organic and free-range systems offer significantly longer lifespans and better welfare conditions, their higher production costs and lower turnover rates keep them marginal compared to the dominant industrial model.

Evan Thomas: Author, "First: Sandra Day O’Connor"

Evan Thomas, Sandra Day O'Connor

Appointed by President Reagan as the Supreme Court's first female justice, Sandra Day O'Connor leveraged her background as a state legislator and political network builder to become the decisive swing vote in roughly 330 major cases. Her judicial philosophy emphasized strategic compromise and bridge-building, yielding landmark rulings that prohibited gender discrimination in state institutions, refined the "undue burden" standard for abortion rights, and upheld affirmative action. O'Connor transformed the Court's internal culture into a cohesive body through weekly lunches and served as a critical mentor to future female justices, proving that practical negotiation could achieve significant legal progress without rigid ideological activism.