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| Criterion |  Operations Change Analysis |  Systems Thinking Current Reality Tree |  Operations A3 Problem Solving |
|---|---|---|---|
Purposedifferent | For a deviation after a change, the method isolates the influence of the altered condition. It narrows down which differences are relevant and which are just accompanying noise. | 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. |
Complexitydifferent | Medium | High | Medium |
Timedifferent | 45-120 min | 2-6 h | 45-90 min |
Participantsdifferent | 2-6 | 3-8 | 2-5 |
Formatdifferent | Workshop + async | Workshop | Workshop + async |
Outputdifferent | Change Matrix, Cause Hypotheses, Validation Questions, Action List | Current Reality Tree, Core Problems, Intervention Ideas | A3 Report, Action Plan, Root Cause Analysis |
Tagsno overlap | ChangeRoot causeTroubleshootingComparison | Systems thinkingRoot causeConstraintsCausality | LeanProblem solvingCoachingOperations |
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