As you get older, your human capital evolves and it has its ups and downs as you age and you start switching from human capital to other forms of capital.

随着年龄增长，你的人力资本不断发展,它随着你的年龄不断起伏,你的人力资本开始,转变成其他形式的资本。

耶鲁公开课 - 金融市场课程节选

Insurance evolves separately from securities.

保险是从证券衍变而来的

耶鲁公开课 - 金融市场课程节选