But Doug Welsh,a professor at Texas A&M University, says not to go too far with pruning.

VOA: special.2009.10.06

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

But at the Featherstone Winery, no man or machine does the pruning.

VOA: special.2009.07.14