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The Thimbles Summary

The Lean Startup

The book in one sentence

A startup is an experiment, so the fastest route to a lasting business is to test your assumptions with real customers early and often, and change course based on what you learn.

Who it's for

Founders at any stage, innovation teams inside larger organisations, product managers, and anyone about to spend serious time or money on an untested idea.

The big idea

Ries, a Silicon Valley entrepreneur, learned the hard way that careful building can go to waste. At IMVU, the company he co-founded, the team spent months on features customers didn’t want, and then learned to put rough versions in front of users quickly and adjust. He defines a startup as any organisation creating something new under conditions of extreme uncertainty, whether that’s two people in a garage or a team inside a multinational. In those conditions, a detailed business plan is mostly guesswork. What matters is learning, quickly and cheaply, what actually works.

The full summary continues with the five ideas worth keeping, three things to try this week, the 5-minute deep dive and our full verdict, as a PDF to keep.

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