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Inverse View
It is not the case that A proof that cannot be mechanically verified as syntactically complete conflates semantic entailment with derivability, undermining the syntactic reading.
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Reasons For
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Reason for
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1.
Mathematical practice accepts proofs verified by expert consensus without mechanical checking; this works because semantics guide syntax naturally.
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2.
The distinction between derivability and entailment is conceptual, not practical; all useful proofs eventually admit mechanical encoding.
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3.
Requiring mechanical completeness conflates epistemology with metaphysics; a proof can be semantically valid without being algorithmically verifiable.
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Reasons Against
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Reason against
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1.
Syntactic derivability requires explicit rule application; unverifiable proofs rely on intuitive semantic content the reader supplies.
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2.
Gödel's incompleteness shows formal systems distinguish derivability from truth; conflating them obscures this fundamental gap.
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3.
Mechanical verification is the standard for rigor in logic; proofs escaping it depend on informal interpretation, not pure syntax.
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