Skip to content
Carmelics
TopicsThinkersChangesContributorsLoading account…

    Carmelics

    A reasoning platform. Break down any belief into clear reasons, explore both sides, and weigh the evidence honestly.

    Navigate

    • Topics
    • Search
    • Recent Changes
    • Contribute
    • How It Works
    • Glossary
    • Thinkers
    • Contributors
    • About
    • Statistics
    • Terms
    • Privacy

    Database

    Statements
    —
    Perspectives
    —
    Topics
    —

    Press ? for keyboard shortcuts

    LoyalLoyalJusticeJustice
    Made withinDC&Austin
    Statements
    321,452
    Perspectives
    108,905
    Topics
    42
    Home/Original/inverse
    See Original
    Inverse View

    It is not the case that Formal validity, properly construed, is defined by form alone: if a form is valid, every substitution instance must preserve truth.

    ?Set your confidence on the premises below to see your aggregate.

    Reasons For

    1 perspective
    Reason for
    ?
    • 1.Some formally valid arguments in first-order logic fail truth-preservation when quantifiers range over empty domains.
      ?

      Think about whether this reason is strong or weak

    • 2.Substitution instances require interpretation of non-logical terms; validity thus depends partly on semantic content, not form alone.
      ?

      Think about whether this reason is strong or weak

    • 3.Classical logic and intuitionistic logic have identical forms but different validity standards, suggesting form underdetermines validity.
      ?

      Think about whether this reason is strong or weak

    Reasons Against

    1 perspective
    Reason against
    ?
    • 1.Formal validity must depend only on logical structure, not content, or else validity becomes subjective and varies by domain.
      ?

      Think about whether this reason is strong or weak

    • 2.Truth-preservation under all substitutions is the only criterion that cleanly separates valid from invalid argument forms.
      ?

      Think about whether this reason is strong or weak

    • 3.If form alone doesn't determine validity, we cannot teach or systematize logic as a formal discipline.
      ?

      Think about whether this reason is strong or weak

    Next step

    Based on where you are in your exploration

    Strongest counterpoint
    Explore the most compelling reason on the other side.