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| Criterion |  Operations Fishbone Diagram |  Agile 4Ls Retrospective |  Operations Learning Review |  Operations Root Cause Tree Analysis |
|---|---|---|---|---|
Purposedifferent | 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 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. | After a project phase with mixed results, the method makes learning from the individual case reusable. It connects events, decisions, and systemic conditions into robust insights. | 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. |
Complexitydifferent | Low | Low | Medium | Medium |
Timedifferent | 30-60 min | 45–75 min | 1-3 h | 1-3 h |
Participantsdifferent | 2-8 | Team members involved | 3-10 | 2-8 |
Formatsame | Workshop | Workshop | Workshop | Workshop |
Outputdifferent | Fishbone Diagram, Cause Categories, Investigation Backlog | 4Ls Board, Learning Themes, Improvement Actions | Learning Review Notes, System Factors, Improvement Actions | Cause Tree, Evidence Notes, Countermeasures |
Tagsno overlap | Root causeQualityOperations | RetrospectiveLearningReflectionTeam | LearningRetrospectiveIncidentOperations | Root causeTreeIncidentQuality |