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| Criterion |  Engineering Fault Isolation |  Systems Thinking Future Reality Tree |  Systems Thinking Systems Mapping |
|---|---|---|---|
Purposedifferent | In technical failures, the visible symptom often gets mixed up with the actual cause. Fault Isolation narrows the fault space and progressively reduces which part of the system is truly affected. | A Future Reality Tree shows how desired actions are meant to lead to a better system state. The method checks whether a path of change holds together logically before time flows into implementation. | Systems Mapping arranges elements, relationships, and boundaries so a complex field becomes legible at a glance. The overview stabilizes the overall picture before detail work or steering begins. |
Complexitydifferent | Medium | High | Medium |
Timedifferent | 30-180 min | 2-4 h | 1-3 h |
Participantsdifferent | 1-6 | 3-8 | 3-12 |
Formatdifferent | Workshop + async | Workshop | Workshop + async |
Outputdifferent | Fault Isolation Map, Test Log, Excluded Hypotheses, Narrowed Fault Area | Future Reality Tree, Negative Branches, Assumption List, Improved Injections | System Map, Dependencies, Leverage Points |
Tagsno overlap | TroubleshootingDiagnosisEngineering | Theory of ConstraintsSystems thinkingChange | Systems thinkingMappingBoundariesChange |
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