Zero-sum game, also known as "zero-sum game", is a concept in game theory as opposed to non-zero-sum game. It is a non-cooperative game and refers to the parties participating in the game. Under strict competition, one party The gain of each party must mean the loss of the other party, and the sum of the gains and losses of all parties in the game is always "zero". There is no possibility of cooperation between the two parties. It can also be said that one's own happiness is based on the pain of others, and the two are completely equal in size, so both parties "benefit themselves at the expense of others." Zero-sum game Examples of zero-sum games include: gambling, futures, etc. Let's take the caught thief as an example. If both of them admit, they are guilty but not serious. If one person admits and the other does not admit, then the person who admits will have to bear a serious crime. If neither person admits, then Judge lightly. The numbers in the square represent the utility obtained by A and B after analyzing whether they agree or not. Part 1 A admits that A does not admit that B admits (2:2) (6:1) B does not admit (1:6) (4:4) Extended in the category of humor, zero-sum game is extended to the "Law of Conservation of Happiness" ( Conservation of Happiness), which means "if someone is happy, someone must be disappointed", that is, "happiness must be built on the pain of others." Similar to Murphy's Law, the main purpose of the Law of Conservation of Happiness is to amuse.

Examples of zero-sum games Examples of zero-sum games include: gambling, futures, etc.