But if we had common knowledge of rationality in this class, then the optimal choice would have been 1.

但是如果大家都知道彼此是理性的,那么最优策略就是1

耶鲁公开课 - 博弈论课程节选

And there are many people in sort of common sense who might think "Gee, if only I could just use my rationality, think reasonably and rationally and not let my emotions guide my behavior I'd be much better off."

有许多有常识的人,也许会想,要是我能用我的理性，合理思考,不让情感指导行为,我会做得更好“

耶鲁公开课 - 心理学导论课程节选