I admit I'm cheating a little bit here because I'm ignoring beliefs, but trust me that's okay in this game.

我承认我偷懒了,因为我忽略了信念,但请大家相信在这个博弈里面是可以的

耶鲁公开课 - 博弈论课程节选

And in 2005, we had a class that didn't trust each other at all I guess, because the average was twenty-three.

在2005年,我想有这个班的同学并不互相信任,因为平均值是23

耶鲁公开课 - 博弈论课程节选