6 docs tagged with "game-theory"

Coordination Problems are situations where multiple equilibria exist and participants benefit from coordinating on the same one — but coordination is difficult because there's no single dominant choice. Driving on the left or right side of the road, choosing communication standards, establishing meeting times, and setting social norms all require coordination without a pre-ordained solution. Schelling's focal points, communication, and conventions are the primary mechanisms that resolve them.

Game Theory is the mathematical study of strategic interaction — situations where the outcome for each participant depends on the choices of all participants. Developed by John von Neumann and Oskar Morgenstern (1944) and extended by John Nash, it provides formal frameworks for analysing negotiation, competition, cooperation, and conflict across economics, political science, biology, and business strategy.

A Nash Equilibrium is a set of strategies in which no player can improve their outcome by unilaterally changing their own strategy, given what the others are doing. Named after mathematician John Nash, who proved that every finite game has at least one Nash Equilibrium, it is the central solution concept in game theory and explains stable outcomes in strategic interactions — not necessarily optimal, but stable because no one has individual incentive to deviate.

The Prisoner's Dilemma is the foundational scenario in game theory illustrating how two rational actors can each have incentives to betray the other, even though mutual cooperation would produce better outcomes for both. Formulated by Merrill Flood and Melvin Dresher (1950) and named by Albert Tucker, it is the paradigm case for understanding why rational self-interest can produce collective irrationality, and why cooperation requires mechanisms beyond individual incentive.

The Tragedy of the Commons describes the situation where individuals, acting rationally in their own self-interest, deplete a shared resource through collective overuse — even though the depletion harms everyone, including themselves. Introduced by ecologist Garrett Hardin in 1968, it is a foundational model for understanding environmental policy, shared resource management, team incentives, and any situation where private benefit conflicts with collective cost.

Zero-sum framing assumes one party's gain must come at another's expense — the pie is fixed. Non-zero-sum framing recognises that interactions can create value for all parties simultaneously — the pie can grow. Most real negotiations, business deals, and relationships are non-zero-sum, but people systematically default to zero-sum thinking, leaving significant value uncreated through zero-sum defensiveness in inherently cooperative situations.