Nash Equilibrium
Version 1.0.0 · Updated 2026-07-30
CORE DEFINITION
In a multi-player game, a Nash equilibrium is reached when each player, knowing the strategies of the other players, has no incentive to unilaterally change their own strategy. That is, given the choices of others, one's own strategy is optimal. Scaffolding role: a predictive tool for stable states. It helps us understand why certain social phenomena (such as price wars, arms races) persist even when all participants know this is not the optimal outcome. Changing a Nash equilibrium requires changing the rules of the game or the payoff structure.
SCAFFOLDING EFFECT
Reduce cognitive load
A predictive tool for stable states. It helps us understand why certain social phenomena (such as price wars, arms races) persist even when all participants know this is not the optimal outcome. Changing a Nash equilibrium requires changing the rules of the game or the payoff structure.
Anchor fast decisions
In the sense of mixed strategies, every finite game has at least one Nash equilibrium (Nash's theorem, guaranteed by Kakutani's fixed-point theorem). An equilibrium is a strategy profile such that each player's strategy is a best response to the strategies of others, and no one has an incentive to unilaterally deviate.
MINIMUM ACTION
In progress 0/5Practice this model in one real situation:
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Source support: Explicit
- en.wikipedia.orghttps://en.wikipedia.org/wiki/Nash_equilibriumverified
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