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    Selten's perfectness criterion shows that rational equili... — Carmelics
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    Supports→Deleting weakly dominated strategies just like strictly dominated strategies has odd consequences

    Selten's perfectness criterion shows that rational equilibrium selection must be stable under small perturbations, which Kreps's payoff examples directly demonstrate weak dominance deletion fails to satisfy.

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    Key Terms

    Equilibrium selection(game theory)
    The problem of choosing which solution to pick when a game has multiple possible outcomes where everyone is doing their best.
    Kreps(game theory and economics)
    David Kreps is an economist and game theorist known for showing problems with certain methods of analyzing strategic games.
    Perfectness criterion(game theory)
    A test that checks whether a strategic solution (called an equilibrium) would still work if players made tiny random mistakes.
    Rational equilibrium(game theory)
    A situation in a strategic game where each player is making the best choice they can, given what everyone else is doing.
    Selten(the statement refers to his specific concept)

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    Reinhard Selten was a German economist and game theorist who won the Nobel Prize for developing new ways to analyze strategic situations where people make decisions affecting each other.
    Stable under small perturbations(game theory)
    A solution that still works and makes sense even if small, accidental changes happen to the game's conditions.
    Weak dominance deletion(game theory)
    A method for simplifying games by removing choices that are never quite the best option, even if other options are only slightly better.

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    Truth & Knowledge1 linkedModality & Possibility1 linked

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