It would certainly be depressing to live in a world of John Nashes. On the other hand, if everyone were perfect bounded rationalists, we'd merely have to repla

It would certainly be depressing to live in a world of John Nashes. On the other hand, if everyone were perfect bounded rationalists, we'd merely have to replace Causal Decision Theory and Evidential Decision Theory with something that can solve coordination problems--probably a variant of Timeless Decision Theory, which could already solve this particular problem in many ways.