It remains true that one wins when he gets to the turnstile first only through the other's cooperation, only by constraining the other player's choice of strategy. He does not win legally or physically by going through the turnstile; he wins strategically. He makes the other player choose in his favor. It is a tactic in a game of strategy, even though the use of it may depend on skill or locational advantage.

Thomas C. Schelling, The Strategy of Conflict, loc. 637