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Inverse View
It is not the case that Using an act's expected utility to assess a decision to perform the act leads to faulty evaluations of decisions.
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Reasons For
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Reason for
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1.
A decision and the act it selects are distinct entities and may have different consequences.
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2.
A decision may fail to generate the act it selects.
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3.
Therefore, the expected utility of a decision may differ from the expected utility of the act the decision selects.
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Reasons Against
2 perspectives
Reason against 1 of 2
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1.
Expected utility calculations assign probabilities to outcomes based on the agent's epistemic state, not the act's causal structure.
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2.
Jeffrey's evidential decision theory shows that act-evaluation via expected utility conflates evidential relevance with causal efficacy.
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3.
Newcomb's Problem demonstrates that maximizing expected utility can recommend dominated strategies, violating basic rationality norms.
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Reason against 2 of 2
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1.
Savage's framework requires that utility be assigned to outcomes of acts, not to the deliberative processes that produce those acts.
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2.
When a decision is the unit of evaluation, the partition of states must be redefined, generating arbitrariness in probability assignments across decision branches.
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