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

So while again, what we read for today is not in itself literary theory, it is nevertheless crucially formative for a great many of the developments in literary theory that we'll be studying.

再重申一遍，我们今天读到的并不是文学理论，但是对于文学理论,的发展却又有重大贡献。

耶鲁公开课 - 文学理论导论课程节选