They said it was part of a southern plan to spread slavery wherever possible.

VOA: special.2009.04.23

And you really, wherever possible, want to avoid that exponential algorithm, because that's really deadly. Yes.

比你的电脑的性能增长的快多了，并且大家无论何时，都要避免去用指数级的函数。

麻省理工公开课 - 计算机科学及编程导论课程节选