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    Quine's criterion of ontological commitment treats 'there... — Carmelics
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    Challenges→The word 'exists' is ambiguous between different senses corresponding to different ontological categories

    Quine's criterion of ontological commitment treats 'there exists' as a single logical operator (the existential quantifier) that ranges over all entities without categorical restriction.

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    Key Terms

    Categorical restriction(as the limiting concept Quine's criterion avoids)
    A limit on what *types* of things something can apply to. 'Without categorical restriction' means the existential quantifier applies equally to all kinds of entities—physical objects, abstract ideas, numbers, etc.
    Logical operator(as used in logic and mathematics)
    A precise mathematical tool used in formal logic (like NOT, AND, OR) that follows strict rules and produces exact results.
    Ontology(Carnap argues this enterprise is based on a mistake)
    The philosophical discipline that tries to answer hard questions about what there really is.
    Quine(as a proper name referring to the philosopher whose theory is being discussed)
    Willard Van Orman Quine was a 20th-century American philosopher who wrote about how we know things and how language works. In this statement, we're discussing one of his specific ideas about observation.

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    existential quantifier(Philosophy of logic; debate over ontological commitment in first-order logic)
    The logical symbol '∃x', traditionally called the existential quantifier, but argued here to be better termed the 'particular quantifier' because it does not inherently carry existential commitment.
    ontological commitment(Used to derive that literal truth of 'a is F' entails existence of a)
    The criterion by which acceptance of a sentence as literally true commits one to the existence of the objects referred to by singular terms in that sentence, provided the sentence cannot be paraphrased away.

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    Modality & Possibility1 linkedPhilosophy of Language1 linked

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    The word 'exists' is ambiguous between different senses corresponding to differe...

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