I stressed in the third lecture that like any--insurance, like any other risk management device, is an invention.

在第三次课上我已经强调过了,保险和其它风险管理工具一样,是一种发明

耶鲁公开课 - 金融市场课程节选

Now, I want to move to the third theme of this lecture, which is invention.

现在，我将转向本课的第三个主题，那就是发明。

耶鲁公开课 - 金融市场课程节选