translation.en: So we better be damn sure -- and by the way, they didn't even have fun doing it, most of them -- so we better be damn sure that we know why we're doing that and it has a real purpose.
translation.zh: 因此我们最好可以非常确定—— 顺便提一下，绝大多数人做人工运算时没有感到任何乐趣。 因此，我们最好可以非常确定 我们知道这样做的原因， 这样做有一个真正的目的。