It is true that by both choosing, by both following this lesson and not choosing the dominated strategy Beta, we ended up with payoffs, , that were bad.

如果我们都不去选择,劣势策略β,我们的收益就是次优的收益

耶鲁公开课 - 博弈论课程节选

Rational choices by rational players, can lead to bad outcomes.

理性人的理性选择造成了次优的结果

耶鲁公开课 - 博弈论课程节选

Rational choices can lead to bad outcomes.

理性选择导致次优的结果

耶鲁公开课 - 博弈论课程节选