If the other guy is pricing below costs, you don't want to sell anything, that's the right intuition.

如果另一家公司定价低于成本,你不想卖任何产品,这是正确的经济学直觉

耶鲁公开课 - 博弈论课程节选

So for those people who took Intro Economics, which is most of you, this is a game, this a setting in which we have constant marginal costs.

大多数学过经济学导论的同学都知道,这里的边际成本是一个常数

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