"irrational exuberance" - 疯牛还可能跑。 但城头也有文章提到30年前十月黑色星期一.

`

Clearly, sustained low inflation implies less uncertainty about the future, and lower risk premiums imply higher prices of stocks and other earning assets. We can see that in the inverse relationship exhibited by price/earnings ratios and the rate of inflation in the past. But how do we know when irrational exuberance has unduly escalated asset values, which then become subject to unexpected and prolonged contractions as they have in Japan over the past decade?

- " The Challenge of Central Banking in a Democratic Society "1996-12-05