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| Criterion |  Operations Root Cause Tree Analysis |  Innovation Reverse Brainstorming |  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. | For persistent errors or blockages, the method shifts the view to the opposite of the desired effect. It exposes the mechanics of failure and makes hidden causes easier to grasp. This makes improvement more concrete and the problem clearer. | 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 | 30-60 min | 30-60 min |
Participantsdifferent | 2-8 | 3-12 | 2-8 |
Formatsame | Workshop | Workshop | Workshop |
Outputdifferent | Cause Tree, Evidence Notes, Countermeasures | Reverse Ideas, Risk Themes, Solution Ideas | Fishbone Diagram, Cause Categories, Investigation Backlog |
Tagsno overlap | Root causeTreeIncidentQuality | BrainstormingIdeationCreativityRisk | Root causeQualityOperations |
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