It's rather, "Can you imagine a world in which the very thing that you really are picking out when you refer to me by the name Shelly-- namely this thing-- can you imagine a world in which that thing exists, but the thing that you're picking up when you use the word Kagan does not exist?"

而是在于,你能不能想象在一个世界里,你用薛立这个名字,指的那个人,也就是这个东西,你能不能想象在一个世界里某个东西存在,而你用卡根这个词,所指的这个东西却不存在

耶鲁公开课 - 死亡课程节选

And there is no programming language that is better well actually, that's not quite true, there are some better at doing certain kinds of things but there's nothing that you can do in C that you can't do in Fortran.

没有一种编程语言是更优秀的,当然实际上，这并不是完全对的，在做某些事儿时一些语言会更好用,但是没有事情是你能在C语言中做,而不能在Fortran中做的。

麻省理工公开课 - 计算机科学及编程导论课程节选