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| Criterion |  Operations 8D Problem Solving |  Systems Thinking Causal Loop Diagram |  Systems Thinking Wardley Mapping |  Operations 5 Whys |
|---|---|---|---|---|
Purposedifferent | 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. | A Causal Loop Diagram makes feedback, reinforcement, and balance in a system legible. It uncovers side effects and self-reinforcement that stay hidden in linear explanations. | Wardley Mapping makes visible where an offering stands today and where it can evolve. The method connects user need, value chain, and evolution stages into a strategic basis for platform, build, or buy decisions. | 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 | High | Medium | Medium | Low |
Timedifferent | 1-6 Wochen | 1-3 h | 1-3 h | 15-30 min |
Participantsdifferent | 4-10 | 2-8 | 2-10 | 2-6 |
Formatdifferent | Workshop + async | Workshop | Workshop + async | Workshop |
Outputdifferent | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan | Causal Loop Diagram, Feedback Notes, Leverage Points | Wardley Map, Strategic Options, Evolution Notes | Root cause notes, Countermeasures |
Tagsno overlap | QualityProblem solvingRoot cause | FeedbackSystems thinkingCausalityDynamics | StrategySystems thinkingDynamics | Root causeIncidentLeanProblem solving |