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    Selten's concept of trembling-hand perfection entails tha... — Carmelics
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    Challenges→B is trivially materially rational at the single state w, regardless of what B would choose at v2

    Selten's concept of trembling-hand perfection entails that rational agents must specify credible choices at all nodes, treating unreached nodes as limit cases of reachable ones.

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    1 reason for
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    Reasons For

    1 perspective
    Reason for
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    • 1.Rational agents must plan contingencies for all possible states to avoid commitment to strategies that collapse under perturbation.
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    • 2.Treating unreached nodes as limits of reachable ones ensures consistency: optimal play shouldn't depend on whether nodes are actually reached.
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    • 3.Credible specification at all nodes eliminates empty threats, which are rationally incoherent even if never challenged in equilibrium.
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    Reasons Against

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    Reason against
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    • 1.Unreached nodes are metaphysically distinct from reachable ones; treating them as limits conflates counterfactuals with actual decision problems.
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    • 2.Agents need only specify credible choices on the equilibrium path; off-path specifications are unfalsifiable and empirically indistinguishable.
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    • 3.The trembling-hand construction imposes unnecessary cognitive burdens and contradicts bounded rationality without improving predictive accuracy.
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    Related

    Agents need only specify credible choices on the equilibrium path; off-path spec...B is trivially materially rational at the single state w, regardless of what B w...Credible specification at all nodes eliminates empty threats, which are rational...Rational agents must plan contingencies for all possible states to avoid commitm...
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    The trembling-hand construction imposes unnecessary cognitive burdens and contra...Treating unreached nodes as limits of reachable ones ensures consistency: optima...Unreached nodes are metaphysically distinct from reachable ones; treating them a...

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    2 (1 for, 1 against)
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