There's a kind of puzzle there as to-- even if, before we move to the question, how widespread are cases like this?

这里又产生了一种疑团-,甚至在我们探讨，这种案例有多普遍之前？

耶鲁公开课 - 死亡课程节选

Last time we ended with the following puzzle or question.

上一讲结束时我们留下这个谜题。

耶鲁公开课 - 死亡课程节选