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    A time index in propositions is unnecessary — Carmelics
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    Home/Philosophy of Language
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    A time index in propositions is unnecessary

    Modality & PossibilityPhilosophy of Language
    ?Rate how convincing each reason is below to see the overall strength.
    1 reason for
    2 reasons against

    Reasons For

    1 perspective
    Reason for
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    • 1.Tenses are best modeled in terms of quantification over times rather than tense operators
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    • 2.If tenses are modeled via quantification over times, a time index on propositions serves no additional role
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    Reasons Against

    2 perspectives
    Reason against 1 of 2
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    • 1.Propositions must have stable, eternal truth values to function as the objects of propositional attitudes and logical inference.
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    • 2.A tensed sentence like 'It is raining' expresses different propositions at different times only if propositions themselves carry temporal indices.
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    • 3.Quantification over times in logical form does not eliminate the need for a time parameter in the proposition's truth conditions.
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    Reason against 2 of 2
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    • 1.Kaplan's framework demonstrates that sentences have both a character and a content, where content is evaluated relative to a circumstance of evaluation including a time index.
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    • 2.If the time of evaluation were absorbed into logical form via quantifiers, context-sensitive temporal expressions like 'now' and 'then' would lose their semantic anchoring to the context of utterance.
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    • 3.The distinction between the time of utterance and the time of evaluation, which operators and indices track, cannot be replicated by unrestricted quantification over times.
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    Topics

    Philosophy of LanguageModality & Possibility

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    Truth & Knowledge1 linked

    Related

    A tensed sentence like 'It is raining' expresses different propositions at diffe...If tenses are modeled via quantification over times, a time index on proposition...If the time of evaluation were absorbed into logical form via quantifiers, conte...Kaplan's framework demonstrates that sentences have both a character and a conte...
    +4 moreShow less
    Propositions must have stable, eternal truth values to function as the objects o...Quantification over times in logical form does not eliminate the need for a time...Tenses are best modeled in terms of quantification over times rather than tense ...The distinction between the time of utterance and the time of evaluation, which ...

    Similar

    A time index in propositions is superfluous93%If propositions have their truth-values eternally, including a time in...83%If tenses are modeled via quantification over times, a time index on p...80%A time index should be included in circumstances of evaluation79%

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    Motivations for eternalism are also both metaphysical and semantic. Those attracted to B-theories of time will take propositions to have their truth-values eternally, which makes inclusion of a time index superfluous. And those who think that tenses are best modeled in terms of quantification over times rather than using tense operators will, similarly, see no use for a time index. For a defense of the quantificational over the operator analysis of tense, see King (2003).
    Extraction notes

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    Details

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