Zero-sum game

A zero-sum game is one in which no wealth is created or destroyed. So, in a two-player zero-sum game, whatever one player wins, the other loses. Therefore, the player share no common interests. There are two general types of zero-sum games: those with perfect information and those without.

A single-winner method is a form of "zero-sum game". There can be only one.

See also: Single-member district