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| Criterion |  Engineering Fault Isolation |  Product Discovery Assumption 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. | When assumptions still sit unordered in the room, it weighs uncertainty against leverage. It makes visible which hypotheses should be checked first. |
Complexitysame | Medium | Medium |
Timedifferent | 30-180 min | 45-60 min |
Participantsdifferent | 1-6 | 2-8 |
Formatsame | Workshop + async | Workshop + async |
Outputdifferent | Fault Isolation Map, Test Log, Excluded Hypotheses, Narrowed Fault Area | Assumption map, Test backlog, Risk ranking |
Tagsno overlap | TroubleshootingDiagnosisEngineering | AssumptionsRiskExperimentsValidation |
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