-- | [P]roduct [I]mprovement [E]ngine -- -- A product improvement engine must measure two things: -- -- 1. Is your product built? -- 2. Do you have product-market fit? -- -- Let's use an analogy: building a startup is like jumping off a clif and -- assembling a plane on the way down. As we approach the ground at terminal -- velocity, only two questions are relevant: Is the plane built? Does it fly? -- Nothing else matters. -- -- So, Pie is a program that records answers to these two things and then -- reports on whether we are making the correct progress. -- -- This is inspired by a few things: -- -- - YC's Startup School has a build sprint questionnaire -- - Sam Altman's startup playbook: "You want to build a 'product improvement -- engine' in your company." -- - Sean Ellis' question: "How would you feel if you could no longer use this -- product? (a) Very disappointed, (b) somewhat disappointed, (c) not -- disappointed" and then measure the percentage who answer (a). module Biz.Pie where main :: IO () main = pure ()