But not all tests for life in outer space take place far away, and not all involve the search for liquids.

VOA: special.2010.05.25

But part of the process of being systematic is not assuming that I'm going to get a lucky guess. But not even thinking really hard at this point. But just pruning the search space.

但是系统化的过程是不允许,假设我做出了,一个幸运的猜测的,而是逐步缩小搜索空间。

麻省理工公开课 - 计算机科学及编程导论课程节选

And what they're doing as they hunt, is they're reducing the search space.

发现bugs的方法，当他们寻找bug的时候。

麻省理工公开课 - 计算机科学及编程导论课程节选

He says the surprise collision clearly justifies the need for programs that search the skies for small space objects that could threaten earth.

VOA: special.2009.08.25