It doesn't tell you, this is the equilibrium concentration that you'll end up with.

他无法告诉你,最终平衡时的浓度是多少。

麻省理工公开课 - 热力学与动力学课程节选

And that was when I switched my concentration from computer science to philosophy and psychology with a single question: ? how can I become happier?

于是我将研究方向,从计算机科学转向了哲学及心理系,目标只有一个：,如何变得更快乐？

哈佛公开课 - 幸福课课程节选