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| Criterion |  Operations Root Cause Tree Analysis |  Innovation SCAMPER |  Operations Failure Mode and Effects Analysis |  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 an existing solution under pressure to change, the method deliberately opens space for systematic variants. It directs attention to rebuilding, combining, and repurposing rather than only new basic ideas. This produces concrete evolution paths for products, offerings, or workflows. | For a process, product, or service with noticeable failure risks, the method assesses possible failure modes in advance. It directs attention to combinations of occurrence, effect, and detectability. | 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 | High | Low |
Timedifferent | 1-3 h | 30-60 min | 2-6 h | 30-60 min |
Participantsdifferent | 2-8 | 2-10 | 3-10 | 2-8 |
Formatsame | Workshop | Workshop | Workshop | Workshop |
Outputdifferent | Cause Tree, Evidence Notes, Countermeasures | SCAMPER Idea List, Concept Shortlist, Variation Notes | FMEA Table, Risk Priority, Mitigation Actions | Fishbone Diagram, Cause Categories, Investigation Backlog |
Tagsno overlap | Root causeTreeIncidentQuality | BrainstormingIdeationCreativityReframingInnovation | RiskQualityOperationsRoot cause | Root causeQualityOperations |