Because, as I said, you can only drive one car at a time and if you've got ten of them in the garage, then it doesn't really do you much good.

正如我说的,你只能一次开一辆车,但如果你的车库里有十辆,它实际上并不会给你带来更多的好处

耶鲁公开课 - 金融市场课程节选