虽然在一切的成长物中,爱情看上去是最快的,究其实却最迟缓。男男女女没有一个人晓得什么是十全十美的爱,除非一直到他们结婚了二十五年之后。
If you're competitor-focused, you have to wait until there is a competitor doing something. Being customer-focused allows you to be more pioneering.
The essence of causal inference is to go beyond the data and ask what would happen if we intervene.