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| Criterion |  Engineering Hypothesis-Driven Troubleshooting |  Growth A/B Testing |  Product Discovery Smoke Test |  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. | 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. | 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. | 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. |
Complexitydifferent | Medium | High | Low | Medium |
Timedifferent | 30-240 min | 1-4 Wochen | 1-5 Tage | 30-180 min |
Participantsdifferent | 1-6 | 1-6 | Nutzertraffic | 1-6 |
Formatdifferent | Workshop + async | Async | Async | Workshop + async |
Outputdifferent | Hypothesis Log, Test Plan, Evidence Notes, Diagnosis Summary | Experiment results, Decision log, Learning summary | Interest Metrics, Conversion Signal, Learning Note | Fault Isolation Map, Test Log, Excluded Hypotheses, Narrowed Fault Area |
Tagsno overlap | TroubleshootingProblem solvingDiagnosis | ExperimentsGrowthAnalyticsValidation | ValidationExperimentsDemandGrowth | TroubleshootingDiagnosisEngineering |