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| Criterion |  Agile Affinity Estimation |  Operations Barrier Analysis |  Operations Fishbone Diagram |  Agile Bucket System |
|---|---|---|---|---|
Purposedifferent | When many tasks need to be classified quickly, it sorts them by perceived effort and similarity. It reduces the effort of fine-grained estimation for large volumes. | 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 has several possible contributing factors, the method sorts causes by cause areas. It prevents an initial hunch from blocking the view of other plausible drivers. | 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. |
Complexitydifferent | Medium | Medium | Low | Medium |
Timedifferent | 30-90 min | 2-4 h | 30-60 min | 30-90 min |
Participantsdifferent | 3-12 | 2-6 | 2-8 | 3-12 |
Formatdifferent | Workshop | Workshop + async | Workshop | Workshop |
Outputdifferent | Affinity Size Map, Grouped Estimates, Unclear Items | Barrier Inventory, Failure Analysis per Barrier, Action Backlog | Fishbone Diagram, Cause Categories, Investigation Backlog | Bucketed Backlog, Relative Estimates, Split Candidates |
Tagsno overlap | EstimationBacklogRelative sizing | Root causeSafetyIncident | Root causeQualityOperations | EstimationBacklogRelative sizing |