We had a bubble in the stock market in the '90s and it collapsed after 2000 and with that it brought the economy down.

我们在九十年代股票市场中有泡沫,并且它在2000年崩塌了0,这使得经济一度低迷。

耶鲁公开课 - 金融市场课程节选

And so do we want to say, do you want to argue that is just one instance of one of these bubbles, one of these manias take place even in free market.

那么您是否可以这么说,这只是众多泡沫，或者众多不规范行为中的一项,自由市场经济也不是万能的。

斯坦福公开课 - 经济学课程节选