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| Criterion |  Operations Gemba Walk |  Operations MORT Analysis |  Operations Family Tree Analysis |  Operations Causal Factor Analysis |
|---|---|---|---|---|
Purposedifferent | When there is uncertainty about the real course of a process, the method brings observation to the place where work happens. It combines perception, follow-up questions, and process knowledge so decisions rest on actual workflows instead of assumptions. | For a safety-relevant event or a system with high protection requirements, the method examines where controls failed. It exposes both technical and organizational gaps. | For a series of incidents with a similar pattern, the method arranges individual events as branches of a common origin. It makes visible which conditions keep recurring. | 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. |
Complexitydifferent | Low | High | Medium | High |
Timedifferent | 30-120 min | Mehrere Tage bis Wochen | 2-4 h | 2-6 h |
Participantsdifferent | 2-6 | 2-6 | 2-6 | 3-10 |
Formatdifferent | Workshop | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Observation Notes, Improvement Ideas | MORT Worksheets, Findings per Branch, Corrective Actions, Systemic Recommendations | Family Tree Diagram, Pattern Notes, Systemic Measures | Event Timeline, Causal Factor Chart, Cause List, Corrective Actions |
Tagsno overlap | LeanObservationProcessOperations | Root causeSafetySystemicIncident | Root causePatternsIncidentSystemic | CausalityIncidentRoot causeTimeline |