So the moral here, again, is whenever you're doing an implementation of a simulation, you do need to have some underlying theory about the model.

所以这里的寓意还是,不管你在做什么东西的仿真程序，你需要有一个,模型的底层程序。

麻省理工公开课 - 计算机科学及编程导论课程节选

You certainly shouldn't change anything about the function.

你当然也不需要改变函数的什么东西。

哈佛公开课 - 计算机科学课程节选

What do you need to measure it?

你需要什么东西来测量

耶鲁公开课 - 基础物理课程节选