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| Criterion |  Operations Root Cause Tree Analysis |  Operations 5 Whys |  Facilitation Barcamp |  Operations Barrier Analysis |
|---|---|---|---|---|
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 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. | When many people can contribute knowledge and the flow should stay open, Barcamp provides a framework for self-organized sessions. The format channels energy without defining the content too narrowly in advance. | For a risk that can only be managed through multiple layers of protection, the method examines the effectiveness of each barrier. It shows where safeguards are missing, too weak, or fail under real conditions. |
Complexitydifferent | Medium | Low | Medium | Medium |
Timedifferent | 1-3 h | 15-30 min | Halber Tag bis 2 Tage | 2-4 h |
Participantsdifferent | 2-8 | 2-6 | 15-200 | 2-6 |
Formatdifferent | Workshop | Workshop | Workshop | Workshop + async |
Outputdifferent | Cause Tree, Evidence Notes, Countermeasures | Root cause notes, Countermeasures | Session Board, Session Notes, Community Learnings | Barrier Inventory, Failure Analysis per Barrier, Action Backlog |
Tagsno overlap | Root causeTreeIncidentQuality | Root causeIncidentLeanProblem solving | FacilitationLarge groupLearning | Root causeSafetyIncident |