Recall the practical moves for PDCA, RCA, and gate decisions during live quality work.
PDCA What does Plan require before a quality test starts? Think prediction plus measurement. A clear expected result, a scoped change, a sample boundary, a measure, and a decision rule for what happens after Check. Without these, Do becomes activity and Check becomes opinion. RCA trigger When should a defect trigger RCA instead of simple correction? When the cause is unknown, the issue recurs, the impact is high, or the gate failed to catch a customer-visible defect. Correction fixes the output; RCA improves the system. Compare Inspection result or quality gate? Inspection informs the gate; the gate decides movement. Objection…
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