variable pitch

A Startup School 2013 session where Paul Graham and Sam Altman hold live office hours with startups including CodeCombat, Flexport and others. The founders pitch and get on-the-spot feedback.

A 1997 interview with Jeff Bezos taped at a Special Libraries conference, where he explains why Amazon started with books and why the web made it possible. He calls it the Kitty Hawk stage of electronic commerce.

YC partner Michael Seibel discusses his essay on real product-market fit, why founders wrongly believe they have it, and how building a company is not a single-variable problem, drawing on Justin.tv and Socialcam.

CNBC interview with Tesla founders Martin Eberhard and Marc Tarpenning about starting the company in 2003, the battery idea, the Roadster, and Elon Musk's role.