Ah,says the soul theorist, Follow the soul--unless the soul splits, Shelly Kagan in which case neither of them is Shelly Kagan.

灵魂理论者说，跟随灵魂，除非灵魂分裂，那样他们就都不是。

耶鲁公开课 - 死亡课程节选

So Alpha in this case is better against Alpha, and Beta is better against Beta, but neither dominates each other.

所以对方选α时我应该也选α,她选β我也应该选β,这里没有优势策略

耶鲁公开课 - 博弈论课程节选