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| Criterion |  Systems Thinking Current Reality Tree |  Operations A3 Problem Solving |  Operations 5 Whys |
|---|---|---|---|
Purposedifferent | A Current Reality Tree condenses many symptoms into a few causal chains. The method makes visible which core problems drive several negative effects at once. | For a complex deviation with several people involved, the method bundles problem, analysis, and decision onto one page. It creates a shared working space where causes, countermeasures, and follow-up fit together. | 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 | Low |
Timedifferent | 2-6 h | 45-90 min | 15-30 min |
Participantsdifferent | 3-8 | 2-5 | 2-6 |
Formatdifferent | Workshop | Workshop + async | Workshop |
Outputdifferent | Current Reality Tree, Core Problems, Intervention Ideas | A3 Report, Action Plan, Root Cause Analysis | Root cause notes, Countermeasures |
Tagsno overlap | Systems thinkingRoot causeConstraintsCausality | LeanProblem solvingCoachingOperations | Root causeIncidentLeanProblem solving |
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