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| Criterion |  Engineering Fault Isolation |  Engineering Hypothesis-Driven Troubleshooting |  Decision Making Pre-Mortem |
|---|---|---|---|
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. | When systems fail unexpectedly, spontaneous attempts often produce more noise than insight. Hypothesis-driven Troubleshooting translates symptoms into testable assumptions and makes troubleshooting learnable. | In early initiatives with many uncertainties, planning quickly turns too optimistic. A pre-mortem makes the expected failure visible in advance and sharpens the view of causes, gaps, and countermeasures. |
Complexitydifferent | Medium | Medium | Low |
Timedifferent | 30-180 min | 30-240 min | 20–45 min |
Participantsdifferent | 1-6 | 1-6 | Small cross-functional group |
Formatdifferent | Workshop + async | Workshop + async | Workshop |
Outputdifferent | Fault Isolation Map, Test Log, Excluded Hypotheses, Narrowed Fault Area | Hypothesis Log, Test Plan, Evidence Notes, Diagnosis Summary | Risk list, Mitigation plan, Assumption log |
Tagsno overlap | TroubleshootingDiagnosisEngineering | TroubleshootingProblem solvingDiagnosis | RiskDecisionFailurePlanning |
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