ABSTRACT
From its very beginning, non-cooperative game theory was primarily interested in the coordination of individual agents and formally defined various equilibrium notions whose main properties were precisely scrutinized. These notions were first introduced from the modeler’s point of view, expressing necessary conditions ensuring a compatibility between expectations and plans for each player and between plans for all players. Such an approach is not in prior accordance with methodological individualism, which requires the emergence of an equilibrium to result from the conjunction of individual behaviors without the introduction of an outside entity. Hence these notions have to be justified from the players’ point of view: the modeler exhibits concrete coordination processes by which they succeed in adjusting their respective actions in order to reach an equilibrium state.
