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| Criterion |  Systems Thinking Evaporating Cloud |  Operations 8D Problem Solving |  Operations 5 Whys |  Operations Barrier Analysis |
|---|---|---|---|---|
Purposedifferent | The method makes visible why two seemingly incompatible demands arise and which assumption must be tested to resolve the conflict. | For an acute quality or delivery problem, the method structures immediate protection and root cause work together. It keeps the situation stable while the actual cause is investigated cleanly. | 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. | 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 | High | Low | Medium |
Timedifferent | 60-120 min | 1-6 Wochen | 15-30 min | 2-4 h |
Participantsdifferent | 2-8 | 4-10 | 2-6 | 2-6 |
Formatdifferent | Workshop | Workshop + async | Workshop | Workshop + async |
Outputdifferent | Conflict Cloud, Assumption List, Breakthrough Ideas, Next Experiments | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan | Root cause notes, Countermeasures | Barrier Inventory, Failure Analysis per Barrier, Action Backlog |
Tagsno overlap | Theory of ConstraintsAssumptionsSystems thinking | QualityProblem solvingRoot cause | Root causeIncidentLeanProblem solving | Root causeSafetyIncident |