You picked the perfect example to be wrong about :) Facebook ships every day, and in the early days they shipped continually because they were editing the code

You picked the perfect example to be wrong about :) Facebook ships every day, and in the early days they shipped continually because they were editing the code on the live servers (no revision control even). I doubt that anyone would have called the very first version of facebook "great", but they've shipped thousands of times since then, and now they have product with a billion users. And of course Facebook wasn't his first product either -- remember the Facemash story?