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Deduplication filters, semantic caches, drift guards, and answer grader gates deploy to answer the question: \"Does this text still mean the same thing?\" But the score answers a different question: \"How much did the wording change?\" We audit this gate class as a measurement instrument. In the cases these gates exist to catch, the two can run in opposite ways. Many times, reversing an instruction is a single word edit, while agreement often rephrases a sentence. 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