Suppose I reason and say if we, me and my pair, both reason this way and choose Alpha then we'll both get 0.

假如我和我队友都这么想,如果我们都选α我们得到0单位效用

耶鲁公开课 - 博弈论课程节选

And what about if we both choose 2?

如果两人都选了立场2呢

耶鲁公开课 - 博弈论课程节选

So certainly part of the problem here, with the reasoning I just gave you-- the reasoning that said I should choose Beta, because if we both reason the same way, we both do better that way-- involves some kind of magical reasoning.

那么说问题就出在了这里,就是之前我们说应该选β的问题,如果我们要都这么想,确实得到更好成绩,但这是有前提的

耶鲁公开课 - 博弈论课程节选

So the easy ones are on the diagonal: you both get B- if we both choose Alpha; we both get B+ if we both choose Beta.

这样就更直观了,如果我们都选α的话得B-,如果我们都选β的话得B+

耶鲁公开课 - 博弈论课程节选