I've certainly written code that has this problem, I've tried to use my own code that has this problem, and good to us, right, good hygiene, I'm going to use that word again here, of getting into the habit of writing defensive code up front, it's part of that collection of things that you ought to do is a great thing to do.

我举手了吧？,我当然写过犯这种错误的程序了,我也尝试过应用含有这种错误的代码，不错，好的卫生，我还是要用这个词,对我们有帮助，养成写防卫性,代码的好习惯，是你应该做的,一系列事情之一,也是我们日后要做的主要的事情。

麻省理工公开课 - 计算机科学及编程导论课程节选

Now what you might do about this, let's say that we--that you're the Surgeon General or you're the top health official in some country and you agree with this poll, that people are eating too much junk food.

那我们现在要怎么做呢,假设,你是卫生部部长或者你是,某国的卫生部门的高官并且你认可,人们摄取了过量垃圾食品的结论

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选