most number crunchers in social sciences, because--

大部分数字统计员要聪明
here I think the last sentence

我想这是最后一个句子了
what I'll show is important.

这句话非常重要
Well you have to make sure that the relationship,

你必须确保
what the causal relationship shows, is really causal. Right?

因果关系所表明的是真正的因果
"And therefore we shall investigate, by the aid of deduction,

"因此我们应该在演绎法的指引下研究
how one of the two terms has produced the other one." Right?

两个术语中的一个如何造成了另一个"
Today we would say, what Durkheim is suggesting,

今天我们会说涂尔干所表明的是
if you want to establish real causality,

如果你想建立真正的因果关系
short of the possibility of an experimental method,

无法使用实验方法
you have to figure out what is the causal mechanism,

你必须搞清楚因果关系的机制是什么
what relates the two phenomena together,

是什么将两种在统计学上有关的现象