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| Criterion |  Product Discovery Smoke Test |  Operations 8D Problem Solving |  Operations Fishbone Diagram |
|---|---|---|---|
Purposedifferent | 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. | For an acute quality or delivery problem, the method structures immediate protection and root cause work together. It keeps the situation stable while the actual cause is investigated cleanly. | When a problem has several possible contributing factors, the method sorts causes by cause areas. It prevents an initial hunch from blocking the view of other plausible drivers. |
Complexitydifferent | Low | High | Low |
Timedifferent | 1-5 Tage | 1-6 Wochen | 30-60 min |
Participantsdifferent | Nutzertraffic | 4-10 | 2-8 |
Formatdifferent | Async | Workshop + async | Workshop |
Outputdifferent | Interest Metrics, Conversion Signal, Learning Note | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan | Fishbone Diagram, Cause Categories, Investigation Backlog |
Tagsno overlap | ValidationExperimentsDemandGrowth | QualityProblem solvingRoot cause | Root causeQualityOperations |
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