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    Descending to a singular term outside the subject's suppo... — Carmelics
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    Supports→Suppositional descent from universal statements to singular statements can yield false conclusions from true premises when proper names refer to non-men or deceased individuals

    Descending to a singular term outside the subject's suppositional range violates the formal conditions of valid descent, producing material failure regardless of surface logical form.

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    1 reason for
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    Reasons For

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    Reason for
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    • 1.Valid descent requires the descending term to fall within the original quantifier's domain; violating this breaks logical entailment.
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    • 2.Medieval logicians established that suppositional range defines legitimate inference paths; departing it commits a material fallacy.
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    • 3.Surface logical form cannot rescue inferences that fail at the semantic level where terms actually acquire their referential content.
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    Reasons Against

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    Reason against
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    • 1.Suppositional range is context-dependent and interpreter-relative; no single formal violation applies universally across all frameworks.
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    • 2.Material failure and formal invalidity are distinct; a descent can fail materially while remaining formally valid in its logical structure.
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    • 3.Singular terms outside suppositional range may still satisfy inference rules if the universal quantifier's scope is properly restricted.
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    Key Terms

    Descent (in logic)(testing whether a logical principle holds up in practice)
    A logical method where you test whether a general rule works by applying it to specific cases; if it fails in those cases, the rule itself is invalid.
    Formal conditions(as prerequisites for consciousness)
    The basic mental frameworks or rules that have to be in place before you can even think about or perceive anything at all.
    Material failure(as used in logic)
    When an argument breaks down because of the actual content or meaning of the terms involved, rather than because the logical structure is flawed.
    Valid (in logic)(Whether the logical steps actually work)
    When the reasoning in an argument follows the rules of logic correctly, so if the starting points are true, the conclusion must be true.
    singular term(Central to the criterion of ontological commitment)
    A term in a sentence that purports to refer to a specific individual object, the literal truth of whose containing sentence generates ontological commitment to that object.
    suppositional range(in medieval logic and semantics)
    The set of different things a word is allowed to refer to or stand in for depending on the situation.

    Connections

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    Philosophy of Language1 linked

    Related

    Material failure and formal invalidity are distinct; a descent can fail material...Medieval logicians established that suppositional range defines legitimate infer...Singular terms outside suppositional range may still satisfy inference rules if ...Suppositional descent from universal statements to singular statements can yield...

    Details

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    Perspectives
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    Suppositional range is context-dependent and interpreter-relative; no single for...Surface logical form cannot rescue inferences that fail at the semantic level wh...Valid descent requires the descending term to fall within the original quantifie...