如果投资者认为所有人都会采取同样做法，这可能是理性的。

This can be rational behaviour if investors think that everyone else will do the same.

youdao

理性的投资者选择更多的价值，且比起较多风险更喜欢较少的风险。

A rational investor chooses more value over less, and prefers less risk to more risk.

youdao

但是依赖投资人是理性的那种观点看来使事情更复杂了。

But relying on the notion of rational investors seems to complicate matters.

youdao

Emotion ruled the decisions, not rational economic calculus.

情绪主导了投资决策,而不是理性的经济学计算

耶鲁公开课 - 金融市场课程节选