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| Criterion |  Operations Standard Work Analysis |  Operations 5 Whys |  Product Discovery Smoke Test |  Product Discovery Fake Door Test |
|---|---|---|---|---|
Purposedifferent | When the same task is done differently depending on the person, the method exposes the reliable core. It creates comparability without unnecessarily choking off needed latitude. | For a single, hard-to-explain deviation, the method exposes the causal chain behind the visible symptom. It keeps the cause open until a controllable condition emerges instead of a mere description. | 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. | When demand is still unclear, it measures interest in a feature before it is built. It separates real behavior from polite agreement and deliberately keeps build effort small. |
Complexitydifferent | Medium | Low | Low | Medium |
Timedifferent | 1-3 h | 15-30 min | 1-5 Tage | 1-5 Tage |
Participantsdifferent | 2-6 | 2-6 | Nutzertraffic | Nutzertraffic |
Formatdifferent | Workshop | Workshop | Async | Async |
Outputdifferent | Standard Work Sheet, Deviation List, Improved Standard, Training Needs | Root cause notes, Countermeasures | Interest Metrics, Conversion Signal, Learning Note | Click Data, Interest Signal, Learning Decision |
Tagsno overlap | LeanProcessQuality | Root causeIncidentLeanProblem solving | ValidationExperimentsDemandGrowth | ValidationExperimentsDemandDiscovery |