What does it mean to him? "Nothing,and I'm not even sure when it is.

VOA: special.2010.02.08

Far from it. It's not about saying, "Well I'm depressed. There's nothing I can do about it.

远远不是那样，不是说，“我很抑郁，这是毫无办法的事。

哈佛公开课 - 幸福课课程节选

But at the end of the day, this program does in effect nothing because I'm not printing the answer, I'm not saving the answer, I'm not doing anything with the answer.

但最终这个程序都不会做什么有效地事情,因为我没有把答案打印出来，我没有保存那个答案，我没有对那个答案做相应的操作。

哈佛公开课 - 计算机科学课程节选