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| Criterion |  Engineering Hypothesis-Driven Troubleshooting |  Systems Thinking Future Reality Tree |  Engineering Fault Isolation |  Systems Thinking Leverage Points |
|---|---|---|---|---|
Purposedifferent | When systems fail unexpectedly, spontaneous attempts often produce more noise than insight. Hypothesis-driven Troubleshooting translates symptoms into testable assumptions and makes troubleshooting learnable. | 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 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. | Leverage Points show exactly where interventions in a system produce a disproportionate effect. It draws relationships, patterns, and feedback loops. The result is captured as a leverage map and action strategy. |
Complexitydifferent | Medium | High | Medium | High |
Timedifferent | 30-240 min | 2-4 h | 30-180 min | Half day |
Participantsdifferent | 1-6 | 3-8 | 1-6 | 3-12 |
Formatdifferent | Workshop + async | Workshop | Workshop + async | Workshop |
Outputdifferent | Hypothesis Log, Test Plan, Evidence Notes, Diagnosis Summary | Future Reality Tree, Negative Branches, Assumption List, Improved Injections | Fault Isolation Map, Test Log, Excluded Hypotheses, Narrowed Fault Area | Leverage Map, Action Strategy |
Tagsno overlap | TroubleshootingProblem solvingDiagnosis | Theory of ConstraintsSystems thinkingChange | TroubleshootingDiagnosisEngineering | Systems thinkingChangeStrategy |