"But I like the concept of knowing something in class but then going back and pressing pause or rewind and actually getting a deeper understand of it."

VOA: standard.2010.03.26

Let me rewind slightly in the story so that I don't actually mislead because I forgot to update these two cells.

我们先倒回去一点,我没有误导，因为我忘记了,更新这两个单元。

哈佛公开课 - 计算机科学课程节选