For those people who aren't familiar with this and are worried about the economics of it in particular, it's gone over in considerable detail in chapter 6 of the textbook.

那些没有涉足过这些知识的同学,或者经济学学得不太好的同学,回去看看教材第六章,有详细解释的

耶鲁公开课 - 博弈论课程节选

Revenues minus costs makes profits, and again, for those of you who are less familiar with economics, I'm hoping this is not really too hard but you can read up on it.

收入减去成本就是利润,对经济学不太了解的同学,我觉得这个很简单,你们都能听懂吧

耶鲁公开课 - 博弈论课程节选

I hesitate to I don't hesitate to say that you will never read Adam Smith in an economics course here at Yale and it is very unlikely that you will read Freud in your psychology classes.

我犹疑，我毫不犹疑的说,你绝对不会读到亚当？史密斯,至少在耶鲁的经济学课堂上不会,而且你也不太可能,在你的心理学课堂上读到佛洛伊德。

耶鲁公开课 - 政治哲学导论课程节选

And they've decided to go to the Criterion, or the local movie house, and there were these three movies showing, and they're all excited about going to this movie except being Economics majors and not very good at dating, they have forgotten to tell each other which movie they're actually going to go to.

他们想要找一家电影院约会,当时这三部电影正在上映,他们想到要一起看电影都很兴奋,虽然那些经济系的木头不太会约会,他们忘了告诉对方,去看哪一部影片了

耶鲁公开课 - 博弈论课程节选