Halfway through his conversation with Harj Taggar at Startup School 2026, Patrick Collison told a stadium full of founders that the lean startup doctrine, the one that taught a generation to find a tiny niche and iterate out from it, is running out of room.
A few minutes earlier in the same conversation, he had described spending almost two years building Stripe before it ever launched publicly. Same founder, same hour on stage, two stories that sound like they contradict each other.
They don’t, but the reason they don’t is the actual lesson.
Lean Startup isn’t really dead. But one of the assumptions we’ve attached to it probably needs updating: that learning cheaply means you have to think small.
Below you’ll find the two moments from the interview that matter, what Eric Ries’s original doctrine was actually solving for and two prompts you can run in Claude this week:
one to check whether your niche is genuinely divergent or just a smaller, safer version of something crowded
one to find the narrowest real door into the ambitious thing you actually want to build
Inside you will find:
The Doctrine Eric Ries Actually Built
Why Patrick Collison Says the Assumption Broke
The Twist Buried in Stripe’s Own Origin Story
The De-Correlation Test
The Production-User Safety Net
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