You might very well have done some very accurate math but it doesn't matter, because you did the math in the wrong place.

你可能很好地做完了一些很精确地数学运算,但是没有关系，因为你没有做错,数学运算。

哈佛公开课 - 计算机科学课程节选

It actually doesn't do anything at the end of the day because I am performing this math.

实际上，最终它什么都不会做,因为我在演算这个算术。

哈佛公开课 - 计算机科学课程节选