I've read through the same thing twenty times and I've missed something obvious. Someone who's never seen it before looks at and says, did you really mean to do this?

但是它们有一双旁观者之眼,我把同一段代码读上20遍,都会漏掉一些很明显的错误，从没看过这段代码的人会告诉我？

麻省理工公开课 - 计算机科学及编程导论课程节选

There's a guy in about the fifth row there who's missed too much sleep, so somebody just nudge him. That's it, good.

第五排有一个同学,可能很缺乏睡眠吧,旁边的人把他叫醒吧

耶鲁公开课 - 博弈论课程节选