But then developments in other fields can change the relative prices and suddenly make an idea that had been hypothetical and unapplied suddenly work well.

而其他领域的发展,改变了相对价格,过去那些看似空想,而且不切实际的主意,就突然间变得可行了

耶鲁公开课 - 金融市场课程节选

Roger Ibbotson, who is a colleague of Bob Shiller's and mine at the School of Management, has done a fair amount of work, studying the relative importance of these sources of returns.

罗格·伊博森是,我和希勒在管理学院的同事,他在对回报率来源的研究上,做了大量的工作

耶鲁公开课 - 金融市场课程节选