So the big three People who are similar to you, people who are already familiar to you, people who are nearby in space.

三大可变因素,相似性，熟悉度，空间接近性。

耶鲁公开课 - 心理学导论课程节选

And you'll see as we go through the other big-- the other two "big three" that there is a kind of repetition of this theme.

你们将发现-,在我们讨论其他两大可变因素的时候“,主题上有些重合。

耶鲁公开课 - 心理学导论课程节选

But let's quickly talk about the big three.

首先，我们快速地说说三大可变因素。

耶鲁公开课 - 心理学导论课程节选

But if we could statistically control for every other variable, all I'd need to do is measure the distance from your door to everybody else's door on campus and I could chart out who's going to fall in love with whom on the Yale campus.

如果我们能精确地控制其他可变因素，那么只需要测测距离,你宿舍门到其他宿舍门的距离,我就能够计算出,校园里谁爱上了谁。

耶鲁公开课 - 心理学导论课程节选