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| Criterion |  Engineering Fault Isolation |  Product Discovery Smoke Test |  Product Discovery Pretotyping |
|---|---|---|---|
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. | Pretotyping clarifies whether a customer problem and solution idea create enough real demand. It separates problem, assumption, solution, and evidence, and captures the result as a pretotyping sketch, test setup, and conversion data. |
Complexitydifferent | Medium | Low | Low |
Timedifferent | 30-180 min | 1-5 Tage | Stunden bis wenige Tage |
Participantsdifferent | 1-6 | Nutzertraffic | 1-4 |
Formatdifferent | Workshop + async | Async | Workshop + async |
Outputdifferent | Fault Isolation Map, Test Log, Excluded Hypotheses, Narrowed Fault Area | Interest Metrics, Conversion Signal, Learning Note | Pretotyping sketch, Test setup, Conversion data, Go or no-go decision |
Tagsno overlap | TroubleshootingDiagnosisEngineering | ValidationExperimentsDemandGrowth | ValidationDemandMVP |
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