They have a bias. If you ask them, what's the probability that Yale will win the Yale-Harvard game, don't expect Yale students or Harvard students to give an unbiased probability.

人们有偏向性,如果你问他们,耶鲁与哈佛的比赛中耶鲁胜出的几率有多大,不要指望耶鲁或哈佛的学生会给出,一个公正的答案

耶鲁公开课 - 金融市场课程节选

In that game, if you remember what the best responses looked like, they looked like this where this was the effort of Player 1; this was the effort of Player 2.

不知道你们还记不记得最佳对策是什么了,这条线代表参与人1的付出,这条代表参与人2的付出

耶鲁公开课 - 博弈论课程节选