First principles thinking on "product-market fit" looks like this: 1. Pitch = You describe a problem and people immediately say "yes, I have that" = That's a pitch. 2. Word of mouth = Those people tell their friends who reach out wanting to try it 3. PMF = Strangers email asking how to buy before you've even launched
Teaches PMF framework as 3-stage progression with indicators
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123123 of 1000 · 1k–10k followersReach3×0 bookmarks + 2×0 quotes + 1.5×1 replies + 1 likes = 3, against a cap of 1.5k for this league103/600Per viewer0.3% of 25 viewers did something; 5% is full marks20/400Bookmarks weigh most because people save what they intend to reuse. Every part saturates.hide
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Filed under Product by the model because: Teaches PMF framework as 3-stage progression with indicators. The rules.