That's what, in principle, we can do and what I think is the most important concept in finance--this concept of risk pooling.

原则上，这就是我们能做的,我认为这也是金融业最重要的概念,即风险汇聚及分摊。

耶鲁公开课 - 金融市场课程节选

London insurance companies would because the whole concept of insurance is pooling of independent probabilities.

伦敦的保险公司之所以开展火险,是因为整个保险理念,就是将独立事件发生的风险汇聚起来

耶鲁公开课 - 金融市场课程节选