Game theory is about decision making. If you reject game theory, you reject rational decision making being possible. Note that game theory is still useful in th

Game theory is about decision making. If you reject game theory, you reject rational decision making being possible. Note that game theory is still useful in the context of making good decisions against irrational decision makers. Your "put another way" is merely pointing out that often in real world scenarios the game's rules are often part of the unknown information Everything involving decisions is a game. Trade is a game