Strong Nash equilibrium是什么？是不是可以指即使允许“共谋”的情况下也不回打破的“均衡”？https://en.wikipedia.org/wiki/Strong_Nash_equilibrium#cite_note-SNE-1中讲到：A strong Nash equilibrium is a Nash equilibrium in which no coalition, taking the actions of its complements as given, can cooperatively deviate in a way that benefits all of its members.While the Nash concept of stability defines equilibrium only in terms of unilateral deviations, strong Nash equilibrium allows for deviations by every conceivable coalition.