So, for example, you might think Down is dominated, but if we look a bit carefully we see that Down actually does better than Up against Right, and Down does better than Middle against Left.

例如说,你们可能认为选下是个劣势策略,但仔细观察后你会发现,参与人II选右时,选下要比上更好,参与人II选左,选下比选中更好

耶鲁公开课 - 博弈论课程节选