 Little work has been done so far on the logical analysis of evolutionary games along the dimensions of this entry. In fact, there are striking conceptual differences between evolutionary games and the style of analysis pursued here that might be dubbed ‘high rationality’-oriented. Rather than incorporating intentional, strategic actors, evolutionary games work by temporal progression of a dynamical system which is driven by individuals’ fitness values derived from game-like encounters with others. Within such systems, behavior is not driven by belief updates or complex strategic considerations. Rather, players typically display ‘low rationality, following certain hard-wired strategies. Much of the evolutionary system’s dynamics is then driven by changes in the population’s composition of strategy types.