If we had been thinking -- and some of us may well have been thinking and we were right to think provisionally -that Satan was a character that we could actually identify with, if we had been thinking that Satan was in any way a perfect character with some sort of justifiable claim -these thoughts are now being corrected by the means, by the mechanism, of the simile.

如果我们在思考--有些人已经在考虑这些问题,我们的确应该暂时想一想,-撒旦是一个的确可以，如果我们想过撒旦是,一个应当被公正对待的完美的角色的话,-这些想法目前已经得到了，这个机制和比喻的纠正。

耶鲁公开课 - 弥尔顿课程节选

That goes back to that idea of sort of discipline coding. It's easy to have assumptions about what you think are going to come into the program when you writ it. If you really know what they are use them as search, but if you think there's going to be some flexibility, you want to prevent the user getting trapped in a bad spot, and exceptions as a consequence are a good thing to use.

这又回到了规范编码的想法上来了,在你写代码的时候考虑,什么会进入你的代码的思考是简单的,如果你真的知道,他们是用他们来做搜索的,而你希望有一定的灵活性，你想要阻止用户,陷入一个艰难的境地,那么异常是非常实用的。

麻省理工公开课 - 计算机科学及编程导论课程节选