"Maybe you can afford to wait. Maybe for you there’s a tomorrow. Maybe for you there’s one thousand tomorrows, or three thousand, or ten, so much time you can bathe in it, roll around it, let it slide like coins through your fingers. So much time you can waste it. But for some of us there’s only today. And the truth is, you never really know."

Exile is strangely compelling to think about but terrible to experience.

因果推断不仅仅是统计显著性；它关乎理解数字背后的机制。