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    Carmelics

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    Made withinDC&Austin
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    Home/Original/inverse
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    Inverse View

    It is not the case that Nelson Goodman's new riddle shows induction admits rival, mutually inconsistent extrapolations equally self-consistent, so internal coherence fails to discriminate valid from invalid inductive schemes.

    ?Set your confidence on the premises below to see your aggregate.

    Reasons For

    1 perspective
    Reason for
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    • 1.Grue-predicates are artificially time-indexed constructions; natural language and cognitive habits make green/blue more primitive and thus legitimately preferred.
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    • 2.Goodman's problem shows coherence is insufficient but doesn't prove it's irrelevant—projectibility may require coherence plus entrenchment or evolutionary fit.
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    • 3.The riddle assumes induction must be justified purely internally; external constraints (causal realism, reference to mind-independent properties) may resolve the ambiguity.
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    Reasons Against

    1 perspective
    Reason against
    ?
    • 1.Grue and bleen predicates are genuinely projectible under their own internal logic, generating identical empirical predictions as green/blue.
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    • 2.No formal criterion of simplicity, conservatism, or coherence can non-arbitrarily prefer standard induction over grue-based alternatives without circular reasoning.
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    • 3.If two inductive schemes yield identical observable consequences yet contradict each other, coherence alone cannot determine which is rationally justified.
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