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| Criterion |  Engineering Fault Isolation |  Product Discovery Smoke Test |  Product Discovery Learning Card |  Growth A/B Testing |
|---|---|---|---|---|
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. | The Learning Card connects traceable test results to a reasoned next action while keeping the limits of the insight visible. | When two variants compete, discussions quickly decide by taste rather than effect. A/B Testing checks behavior under controlled conditions and separates real improvement from chance or expectation effects. |
Complexitydifferent | Medium | Low | Low | High |
Timedifferent | 30-180 min | 1-5 Tage | 25-40 min | 1-4 Wochen |
Participantsdifferent | 1-6 | Nutzertraffic | 1-5 | 1-6 |
Formatdifferent | Workshop + async | Async | Workshop + async | Async |
Outputdifferent | Fault Isolation Map, Test Log, Excluded Hypotheses, Narrowed Fault Area | Interest Metrics, Conversion Signal, Learning Note | Learning Card with evidence and next action | Experiment results, Decision log, Learning summary |
Tagsno overlap | TroubleshootingDiagnosisEngineering | ValidationExperimentsDemandGrowth | ExperimentsValidationDiscoveryLearning | ExperimentsGrowthAnalyticsValidation |