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| Criterion |  Engineering Fault Isolation |  Product Discovery Smoke Test |  Business Strategy Business Model Stress Test |  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 demand only needs to be roughly verified, it tests interest with minimal effort. It measures whether people would take a next step at all. | A Business Model Stress Test checks how well a business model holds up under pressure and headwinds. It compares strengths, risks, market logic, and courses of action. The result is captured as a stress-test report and action plan per scenario. | When assumptions still sit unordered in the room, it weighs uncertainty against leverage. It makes visible which hypotheses should be checked first. |
Complexitydifferent | Medium | Low | High | Medium |
Timedifferent | 30-180 min | 1-5 Tage | Half day | 45-60 min |
Participantsdifferent | 1-6 | Nutzertraffic | 3-8 | 2-8 |
Formatdifferent | Workshop + async | Async | Workshop | Workshop + async |
Outputdifferent | Fault Isolation Map, Test Log, Excluded Hypotheses, Narrowed Fault Area | Interest Metrics, Conversion Signal, Learning Note | Stress Test Report, Action Plan per Scenario | Assumption map, Test backlog, Risk ranking |
Tagsno overlap | TroubleshootingDiagnosisEngineering | ValidationExperimentsDemandGrowth | StrategyBusiness modelRiskDiagnosis | AssumptionsRiskExperimentsValidation |