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| Criterion |  Operations Root Cause Tree Analysis |  Agile 4Ls Retrospective |  Operations Fishbone Diagram |
|---|---|---|---|
Purposedifferent | For a problem with several suspected causes, the method builds a causal structure instead of a mere list. It makes visible how causes connect and where the strongest points of leverage lie. | When a sprint should not only be assessed but also learned from, it captures experience in clear learning categories. It records what worked, what's missing, and what should run differently next time. | 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. |
Complexitydifferent | Medium | Low | Low |
Timedifferent | 1-3 h | 45–75 min | 30-60 min |
Participantsdifferent | 2-8 | Team members involved | 2-8 |
Formatsame | Workshop | Workshop | Workshop |
Outputdifferent | Cause Tree, Evidence Notes, Countermeasures | 4Ls Board, Learning Themes, Improvement Actions | Fishbone Diagram, Cause Categories, Investigation Backlog |
Tagsno overlap | Root causeTreeIncidentQuality | RetrospectiveLearningReflectionTeam | Root causeQualityOperations |
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Methods with strong topical overlap with the current selection, not yet in the comparison.
