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| Criterion |  Operations Kaizen Event |  Operations Root Cause Tree Analysis |  Operations Fishbone Diagram |
|---|---|---|---|
Purposedifferent | For a tightly scoped process segment with noticeable waste, the method bundles shared energy for change. It suits situations that call for fast learning loops and visible adjustments. | 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 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 | Medium | Low |
Timedifferent | 0.5-5 Tage | 1-3 h | 30-60 min |
Participantsdifferent | 4-10 | 2-8 | 2-8 |
Formatsame | Workshop | Workshop | Workshop |
Outputdifferent | Kaizen Charter, Waste List, Improvement Experiments, Standard Work Update | Cause Tree, Evidence Notes, Countermeasures | Fishbone Diagram, Cause Categories, Investigation Backlog |
Tagsno overlap | LeanContinuous improvementOperations | Root causeTreeIncidentQuality | Root causeQualityOperations |
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