beaten by any other decision rule. We provide necessary and sufficient conditions for imitation to be unbeatable and show … effort coordination games, arms race, search, bargaining, etc., imitation cannot be beaten by much even by a very clever …

beaten by any strategy. We provide necessary and sufficient conditions for imitation to be unbeatable in the sense that there … is no strategy that can exploit imitation as a money pump. In particular, imitation is subject to a money pump if and … condition for imitation not being subject to a money pump is that the relative payoff game is a generalized ordinal potential …