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| Criterion |  Engineering Hypothesis-Driven Troubleshooting |  Knowledge Modeling IBIS |  Engineering Fault Isolation |
|---|---|---|---|
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. | IBIS structures thinking about complex questions as a sequence of issues, ideas, and arguments. The method keeps discussions open without forcing them into premature consensus. | 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. |
Complexitysame | Medium | Medium | Medium |
Timedifferent | 30-240 min | 1-3 h | 30-180 min |
Participantsdifferent | 1-6 | 2-8 | 1-6 |
Formatsame | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Hypothesis Log, Test Plan, Evidence Notes, Diagnosis Summary | Issue Map, Positions, Argument Notes | Fault Isolation Map, Test Log, Excluded Hypotheses, Narrowed Fault Area |
Tagsno overlap | TroubleshootingProblem solvingDiagnosis | RationaleKnowledgeDecision | TroubleshootingDiagnosisEngineering |
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