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Equation 1 · How Verification Actually Works in a Claude Code Workflow

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AA

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AA

Symbol A

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Say check A independently has recall rAr_A against a real defect — the fraction of the time it would catch that class of problem if it ran — and check B has recall rBr_B . If the two checks fail for unrelated reasons, the chance a defect slips past both is the product of the chances it slips past each:

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