Positive-Sum Game
Updated 2026-08-08
INTRODUCTION
English translation pending.
CORE DEFINITION
In game theory, a positive-sum game is one where the total payoff available to the players grows through cooperation, in contrast to a zero-sum game where one party's gain is another's loss. Trade, innovation, and education are standard examples, since voluntary exchange leaves both sides better off. The framework directs attention to expanding the total rather than to dividing a fixed amount.
SCAFFOLDING EFFECT
Reduce cognitive load
- Look for the new value: ask what cooperation would create that neither side could make alone - Design the mechanism: build the rules that let both parties gain from participating - Divide fairly: settle the split so that each side stays willing to keep cooperating
Anchor fast decisions
When parties specialize and exchange, the combined output exceeds what either could produce independently, so the surplus available to divide is larger. Each side can then receive more than its outside option, which makes participation rational. The gain disappears if the rules prevent exchange or if the division leaves one party worse off than walking away.
MINIMUM ACTION
In progress 0/1Practice this model in one real situation:
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Source support: Explicit
- en.wikipedia.orghttps://en.wikipedia.org/wiki/Zero-sum_gameverified
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