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| Criterion |  Operations Kaizen Event |  Operations Causal Factor Analysis |  Operations 5 Whys |
|---|---|---|---|
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 an event with a complicated course, the method breaks down the contributing factors along the timeline. It shows how conditions, decisions, and reactions together produce a course of events. | For a single, hard-to-explain deviation, the method exposes the causal chain behind the visible symptom. It keeps the cause open until a controllable condition emerges instead of a mere description. |
Complexitydifferent | Medium | High | Low |
Timedifferent | 0.5-5 Tage | 2-6 h | 15-30 min |
Participantsdifferent | 4-10 | 3-10 | 2-6 |
Formatdifferent | Workshop | Workshop + async | Workshop |
Outputdifferent | Kaizen Charter, Waste List, Improvement Experiments, Standard Work Update | Event Timeline, Causal Factor Chart, Cause List, Corrective Actions | Root cause notes, Countermeasures |
Tagsno overlap | LeanContinuous improvementOperations | CausalityIncidentRoot causeTimeline | Root causeIncidentLeanProblem solving |
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