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| Criterion |  Operations Barrier Analysis |  Operations Root Cause Analysis |  Agile Bucket System |
|---|---|---|---|
Purposedifferent | For a risk that can only be managed through multiple layers of protection, the method examines the effectiveness of each barrier. It shows where safeguards are missing, too weak, or fail under real conditions. | When a problem keeps recurring and the cause stays unclear, the method exposes the underlying mechanism. It separates symptom, guess, and robust explanation from one another. | When a large batch of work needs a fast, rough estimate, it sorts items into predefined size buckets. It sorts work by value, risk, and delivery ability. The result is captured as a Bucketed Backlog, Relative Estimates, and Split Candidates. |
Complexitysame | Medium | Medium | Medium |
Timedifferent | 2-4 h | 1-4 h | 30-90 min |
Participantsdifferent | 2-6 | 3-8 | 3-12 |
Formatdifferent | Workshop + async | Workshop + async | Workshop |
Outputdifferent | Barrier Inventory, Failure Analysis per Barrier, Action Backlog | Problem Statement, Cause Hypotheses, Confirmed Causes, Action Plan | Bucketed Backlog, Relative Estimates, Split Candidates |
Tagsno overlap | Root causeSafetyIncident | Root causeProblem solvingQualityIncident | EstimationBacklogRelative sizing |
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