The mutual fund theory that we gave last time said, no the mutual fund is just supposed to be diversifying for you.

但上节课讲到的共同基金定理认为,共同基金的目的是分散投资

耶鲁公开课 - 金融市场课程节选

The idea of a function is, that I'm going to capture a common pattern of computation.

函数的目的,就是寻找计算的共同模式。

麻省理工公开课 - 计算机科学及编程导论课程节选