It varies with the square of distance so it goes - in order to go twice as far it takes four times as long.

速度是与距离的平方正相关的--,如果要扩散两倍的距离要多花四倍的时间

耶鲁公开课 - 生物医学工程探索课程节选

If there were perfect correlation, then it would be a correlation of one.

如果是完全正相关的，也就是相关系数等于一。

耶鲁公开课 - 金融市场课程节选

The best you can do sharing among yourselves is sharing your own risk, the risk of your own community; but your own community goes up and down and you're not sharing widely enough.

你们所能做的仅仅是在成员之间,分摊自己的风险，即你们这个小团体的风险;,但由于共有背景下的正相关性,你们的风险无法摊薄。

耶鲁公开课 - 金融市场课程节选

The problem is that if you want to do risk-sharing, you're not, ideally, sharing with someone who's just like you living in Israel, working in a certain agricultural industry-- because there are lots of risks that you've already shared.

如果你真的想要达到风险分摊的效果，理论上说，就不应该只和与你的同伴,比如同住在以色列，一样从事农业的人来分摊-,因为你们承担的许多风险是正相关的。

耶鲁公开课 - 金融市场课程节选

.. The problem is again the ideal-- they're trying to work toward what I think of an ideal that we see in finance-- 1 mainly, the perfect correlation of consumption and the elimination of risk--we all help each other.

问题又回到了理想-,他们为之奋斗的这种理想状态,如果用金融学的理念来解读-,就是消费与风险消除的相关系数为,即完全正相关，所有人都互助互利。

耶鲁公开课 - 金融市场课程节选