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    Carmelics

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    Counterfactual rationality requirements persist even at u... — Carmelics
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    Challenges→B is trivially materially rational at the single state w, regardless of what B would choose at v2

    Counterfactual rationality requirements persist even at unreached nodes, as Stalnaker argues in 'Knowledge, Belief and Counterfactual Reasoning in Games' (1996).

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    Reasons For

    1 perspective
    Reason for
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    • 1.Rational agents must maintain consistent beliefs about what others would do in counterfactual scenarios to avoid exploitable logical inconsistencies.
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    • 2.Game-theoretic equilibrium requires players to have rational responses prepared at all possible nodes, whether reached or not.
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    • 3.Unreached nodes represent genuine possibilities that constrain present rational choice; ignoring them allows irrational behavior in conditional reasoning.
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    Reasons Against

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    Reason against
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    • 1.Rationality requirements should apply only to actual decisions agents face; unreached nodes impose unnecessary burdens on real cognitive capacities.
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    • 2.Counterfactual reasoning at unreached nodes can be underdetermined by evidence, making rationality requirements there empirically unverifiable and metaphysically suspect.
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    • 3.Subgame-perfect equilibrium can be satisfied by ignoring unreached nodes if we condition rationality on actual play paths rather than hypothetical ones.
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    Key Terms

    knowledge(Distinguished from mere true belief, which may be the product of indoctrination and need not exercise deliberative capacities.)
    Justified true belief — true belief that has been arrived at through the exercise of deliberative capacities, including comparison of and deliberation among alternatives.

    Connections

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    Truth & Knowledge1 linkedMoral Responsibility1 linked

    Related

    B is trivially materially rational at the single state w, regardless of what B w...Counterfactual reasoning at unreached nodes can be underdetermined by evidence, ...Game-theoretic equilibrium requires players to have rational responses prepared ...Rational agents must maintain consistent beliefs about what others would do in c...
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    Rationality requirements should apply only to actual decisions agents face; unre...Subgame-perfect equilibrium can be satisfied by ignoring unreached nodes if we c...

    Details

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    claim
    Perspectives
    2 (1 for, 1 against)
    Edits
    1 edit
    Unreached nodes represent genuine possibilities that constrain present rational ...