The Social Radars Paul Graham, Founder, Y Combinator
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Mar 19, 2026 
Paul Graham, YC co‑creator and influential startup essayist, shares behind-the-scenes stories from Y Combinator’s early days. He talks about Hacker News, early fame from notable speakers, crises from press and social-media mobs, intense rescue sessions for struggling startups, and how AI and young founders are reshaping the landscape.
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Word Of Mouth Fueled YC Growth
- YC grew organically because satisfied founders told their programmer friends to apply, not because of deliberate marketing.
- Paul credits essays, Startup School, and word-of-mouth among 22-year-old programmers as the main drivers of application growth.
Peter Thiel Part Time Partner Backlash
- The Peter Thiel controversy began when he was listed as a no‑pay part‑time partner and critics demanded YC drop him for his politics.
- Sam was already planning to remove him for inactivity, so firing him for politics would set a dangerous precedent.
Most YC Work Was Saving Unsung Startups
- YC partners spent most time on small, messy crises for obscure startups, not just the famous successes.
- Paul notes trouble often correlates inversely with eventual fame: big problems typically came from companies that never became huge.