We consider a random matching model without monetary exchange where agents have complete access to each others' histories. Exchange is motivated by risk sharing given random unobservable incomes. The key feature of this environment is that information is mobile across locations even while goods...

This paper proposes as a solution concept for games sets of Nash equilibria that are stable against replacement by alternative Nash equilibria. We prove existence, examine some variants that are related to evolutionary solution concepts, and, most importantly, offer a unified approach to...