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| Criterion |  Engineering Fault Isolation |  Systems Thinking Future Reality Tree |  Decision Making Force Field Analysis |  Operations Change Analysis |
|---|---|---|---|---|
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. | In change initiatives, supporting and restraining forces sit at the table at the same time. Force Field Analysis makes these tensions explicit and shows where change can be pushed forward by strengthening or relieving. | 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. |
Complexitydifferent | Medium | High | Low | Medium |
Timedifferent | 30-180 min | 2-4 h | 45-90 min | 45-120 min |
Participantsdifferent | 1-6 | 3-8 | 3-12 | 2-6 |
Formatdifferent | Workshop + async | Workshop | Workshop | Workshop + async |
Outputdifferent | Fault Isolation Map, Test Log, Excluded Hypotheses, Narrowed Fault Area | Future Reality Tree, Negative Branches, Assumption List, Improved Injections | Force Field Map, Change Levers, Risk Notes | Change Matrix, Cause Hypotheses, Validation Questions, Action List |
Tagsno overlap | TroubleshootingDiagnosisEngineering | Theory of ConstraintsSystems thinkingChange | ChangeDecisionStrategy | ChangeRoot causeTroubleshootingComparison |