👉 Determinacy, in game theory, refers to a property of games where there is always an optimal strategy for each player. In other words, if there were no information about what strategies players would choose or how they would choose them, then every possible strategy for one player would be an optimal strategy for all players. For example, consider the classic 2-player Prisoner's Dilemma game where both players have a choice between two actions: either accept or reject a certain amount of money. In
