Library / Systems Engineering Principles Framework
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Source changed 2026-10-03 10:39:28 UTC · snapshot created 2026-10-03 10:40:04 UTC · last check 2026-10-03 10:45:12 UTC

SYSE.43:4.4 - Locate the failed operation

Test a representative continuation with its expected relevant material known. Ask separately whether that material was written faithfully, whether the current retrieval returned it, and whether the task used it correctly. Supplying the needed record directly can help distinguish retrieval from utilization, provided that the comparison changes only that support.

SYSE.46 qualifies stronger reliance, including delayed and shifted use when relevant. Check an old plausible fact, a newly authoritative change, a no-match case and a distractor that could displace the needed contribution. Preserve necessary fresh access even when repeated memory calls become cheaper. A retrieval score or larger store cannot alone establish improved work.