The problem was that after successfully floating over one wave you find that there is another one behind it just as strong and ready to flood your boat.

VOA: special.2011.04.09

If we did that, if we moved f minus 32 over to the left, that would give me a floating point answer because f is a float.

如果你那样做，如果我们把，放前面，那将会给我们一个浮点数答案,因为f是浮点数。

哈佛公开课 - 计算机科学课程节选