And so you have to figure out how to take that randomness out of the experiment.

因此你要明白怎么把随机数从试验中拿出来,有些时候你没法做一次有效的实验。

麻省理工公开课 - 计算机科学及编程导论课程节选

So I pulled this one out of our archives because of precisely that reason.

我把这条回答从档案中拿出来,恰恰就是这个原因。

哈佛公开课 - 计算机科学课程节选