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    Two sentences expressing the same proposition must always... — Carmelics
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    Home/Philosophy of Language
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    Two sentences expressing the same proposition must always have the same reference.

    Philosophy of Language
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    1 reason for
    2 reasons against

    Reasons For

    1 perspective
    Reason for
    ?
    • 1.Two sentences with the same content express the same proposition.
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    • 2.Content (sense) determines reference.
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    Reasons Against

    2 perspectives
    Reason against 1 of 2
    ?
    • 1.Frege's 'Hesperus is Phosphorus' shows co-referential terms can differ in sense, so propositional identity does not fix reference uniquely.
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    • 2.If two sentences express the same proposition via different senses, the sense-to-reference mapping is many-to-one, breaking the determination claim.
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    Reason against 2 of 2
    ?
    • 1.Kripke's modal argument establishes that proper names are rigid designators, referring to the same object across all possible worlds regardless of descriptive content.
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    • 2.Two sentences embedding the same name in different propositional contexts can express distinct propositions while sharing identical referential values, inverting the claimed dependency.
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    Philosophy of LanguageTruth & Knowledge

    Related

    Content (sense) determines reference.Frege's 'Hesperus is Phosphorus' shows co-referential terms can differ in sense,...If two sentences express the same proposition via different senses, the sense-to...Kripke's modal argument establishes that proper names are rigid designators, ref...
    +2 moreShow less
    Two sentences embedding the same name in different propositional contexts can ex...Two sentences with the same content express the same proposition.

    Similar

    Two sentences with the same content express the same proposition.84%If two sentences express the same proposition, they must have the same...83%Any two necessarily equivalent sentences express the same proposition.82%Any two necessarily equivalent sentences express the same proposition ...80%

    Source

    AI-extracted1/3 agreementValid
    SEP: meaning
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    In general, then, it seems plausible that two sentences with the same content—i.e., which express the same proposition—must always have the same reference, though two expressions with the same reference can differ in content. This is the view stated by the Fregean slogan that sense determines reference (“sense” being the conventional translation of Frege’s Sinn, which was his word for what we are calling “content”).
    Extraction notes

    Validity: Extracted via Max plan + API grounding/validity checks

    Details

    Type
    claim
    Perspectives
    3 (1 for, 2 against)
    Edits
    1 edit