音乐是一种不关乎世界的知识形式，它本身就是一个世界，有自己的规则和真理。

Life is short and you don’t know when it’s gonna be over, so you gotta take every opportunity and run with it.

Randomized evaluations can help us understand what works and what doesn't in development.

计算的目的是洞察，而不是数字。