And his big finding is that you could separate people-- you could separate the question of laughter from the question of a joke or the question of humor.

他有一个重大的发现,你可以区分…,你可以区分什么是笑,什么是玩笑，什么是幽默。

耶鲁公开课 - 心理学导论课程节选

This is what--this is where the humor for that baby comes in, which is you couldn't predict when the sound was coming and some aspect of that was what made it so funny then, what elicited the laughter.

这就是…,为什么那些婴儿那么好笑，因为你猜不到他们什么时候会笑,因此我们才觉得好笑，引起我们大笑。

耶鲁公开课 - 心理学导论课程节选