Game Theory and Rationality.

Player I chooses between the rows, Player II between the columns, and the numbers in each cell represent the payoffs, the first conventionally being Player I’s and the second Player II’s, though in this game they are always equal. In the games discussed in this article, no harm comes from thinking of the payoffs as US dollars, pounds sterling, euros, or other monetary units. In general, this amounts to assuming that the players are risk-neutral within the range of payoffs in the game, so that utility is a strictly increasing linear function of monetary value, though that is immaterial in this trivial game....