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| Criterion |  Agile Bucket System |  Operations Barrier Analysis |  Systems Thinking Current Reality Tree |
|---|---|---|---|
Purposedifferent | 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. | 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. | A Current Reality Tree condenses many symptoms into a few causal chains. The method makes visible which core problems drive several negative effects at once. |
Complexitydifferent | Medium | Medium | High |
Timedifferent | 30-90 min | 2-4 h | 2-6 h |
Participantsdifferent | 3-12 | 2-6 | 3-8 |
Formatdifferent | Workshop | Workshop + async | Workshop |
Outputdifferent | Bucketed Backlog, Relative Estimates, Split Candidates | Barrier Inventory, Failure Analysis per Barrier, Action Backlog | Current Reality Tree, Core Problems, Intervention Ideas |
Tagsno overlap | EstimationBacklogRelative sizing | Root causeSafetyIncident | Systems thinkingRoot causeConstraintsCausality |
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