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Test before you build.

Practical notes on validating ideas cheaply — pretotyping, real experiments, and honest signals.

6 min read

The Fake Door test: measure demand without building anything

The Fake Door is the simplest pretotyping technique there is: advertise the thing, count who reaches for the handle, and learn if the demand is real — before you build a single feature.

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5 min read

Why MVPs are too expensive — and what to do instead

An MVP still costs months and thousands before you learn anything. There's a cheaper way to find out if your idea has legs: test the demand before you build the product.

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