They build them, they do what if games, they play with them, and then they try and adjust them to get them right The nice thing here is, you can decide whether you believe momentum and see what it would mean, or not mean, etc.

他们实现建立程序，他们去做“要是“游戏，他们不断尝试，然后他们不断调整最终得到正确结果,最好的一件事就是，你可以决定你是否相信这个股票势头,看看它到底意味着什么或根本没有意义。

麻省理工公开课 - 计算机科学及编程导论课程节选