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    Ontic vagueness requires that objects themselves have ind... — Carmelics
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    Supports→Vagueness does not exist in the world itself.

    Ontic vagueness requires that objects themselves have indeterminate identity conditions, but Evans (1978) demonstrated this generates contradictions via Leibniz's Law.

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    1 reason for
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    Reasons For

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    Reason for
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    • 1.Evans's argument shows that if object a is indeterminately identical to b, then a has a property (indeterminate identity) that b lacks, violating Leibniz's Law.
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    • 2.Ontic vagueness requires rejecting classical logic's bivalence, making indeterminate identity conditions metaphysically incoherent without logical revision.
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    • 3.Identity must be determinate because it grounds all other properties; vague identity undermines the foundation of any coherent ontology.
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    Reasons Against

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    • 1.Evans conflates metaphysical indeterminacy with epistemic indeterminacy; vague objects can have determinate identity facts we simply cannot access.
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    • 2.Leibniz's Law assumes classical identity conditions; under fuzzy logic or supervaluationism, indeterminate identity needn't violate it.
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    • 3.Many natural objects (heaps, organisms, persons) exhibit borderline identity cases suggesting vagueness is intrinsic, not merely linguistic artifact.
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    Truth & Knowledge1 linkedPhilosophy of Language1 linked

    Related

    Evans conflates metaphysical indeterminacy with epistemic indeterminacy; vague o...Evans's argument shows that if object a is indeterminately identical to b, then ...Identity must be determinate because it grounds all other properties; vague iden...Leibniz's Law assumes classical identity conditions; under fuzzy logic or superv...
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    Many natural objects (heaps, organisms, persons) exhibit borderline identity cas...Ontic vagueness requires rejecting classical logic's bivalence, making indetermi...Vagueness does not exist in the world itself.

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