Valve 的 Handbook 蛮酷的：https://www.valvesoftware.com/en/publications

Our study of successful innovators tells us this: you should expect to be wrong much of the time when you operate under uncertainty. That is a fundamental part of the process and completely acceptable. The only failure is not failure itself, but failure to learn quickly enough that you were wrong.

Failure is an option here. If things are not failing, you are not innovating enough.

今天整理我阅读的时候，顺手记录到 Keep 里的文字。重温一遍，或者删除，或者值得记录到这里，以后不时回顾。又或者值得写一篇文字来扩展说明。

Earlier in this book, I wrote that a start-up that doesn’t figure out PMF will die. The second reason a start-up may die is because of the team’s or, more to the point, the CEO’s inability to make hard decisions.