Game theory and economics. Here's the game, NIM. Here's the solution.
Game theory assumes that the actors behave rationally and strategically. It is also assumed that actors receive utility from their interactions. So I'm walking down the hall following the person ahead of me when they suddenly stop. I quickly change my course of action. In both cases we maximize our utility but we are interacting simultaneously. My question is, when preferences are quickly changing the choices that are made in real time, how can one behave strategically?