Rawls specifies that the parties in the original position are concerned only with citizens' share of what he calls "primary social goods", which include basic rights as well as economic and social advantages. Rawls also argues that the representatives in the original position would adopt the "maximin rule" as their principle for evaluating the choices before them. Borrowed from game theory, maximin stands for maximizing the minimum, i.e., making the choice that produces the highest payoff for the least advantaged position. Thus, maximin in the original position represents a formulation of "social equality".