And will make mistakes. And therefore, you write your programs so that catastrophes don't occur when those mistakes are made.

就是人是很愚蠢的，会犯错误的，因此，你要这样设计你的程序,以达到当犯错误时避免大事故的目的。

麻省理工公开课 - 计算机科学及编程导论课程节选

That's the mistake that is important for us to get clear about.

这就错了,这是个我们要避免的错误。

耶鲁公开课 - 死亡课程节选

Conservation of keystrokes.

避免按键错误。

麻省理工公开课 - 固态化学导论课程节选