One of the most interesting questions we continuously ask ourselves at Accel over the last year and nine months, why didn't we see the Facebook earlier?

在过去的一年九个月里,我们Accel人常问自己一个有趣的问题，为什么我们没早点见到脸谱网呢？

斯坦福公开课 - 扎克伯格谈Facebook创业过程课程节选

But it turns out actually over a third of people who took this class last year took the class because they felt depressed.

但是结果是去年有超过三分之一的人,选这门课是因为他们感觉抑郁。

哈佛公开课 - 幸福课课程节选