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| Criterion |  Product Strategy Product Canvas |  Product Discovery Fake Door Test |  Operations Fishbone Diagram |  Product Discovery Learning Card |
|---|---|---|---|---|
Purposedifferent | When product goal and feature scope don't yet fit cleanly together, it creates a shared working picture. It connects need, core features, and assumptions into a solid starting point. | 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. | 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. | The Learning Card connects traceable test results to a reasoned next action while keeping the limits of the insight visible. |
Complexitydifferent | Medium | Medium | Low | Low |
Timedifferent | 1-2 h | 1-5 Tage | 30-60 min | 25-40 min |
Participantsdifferent | 2-8 | Nutzertraffic | 2-8 | 1-5 |
Formatdifferent | Workshop + async | Async | Workshop | Workshop + async |
Outputdifferent | Product Canvas, Product Assumptions, Scope Notes | Click Data, Interest Signal, Learning Decision | Fishbone Diagram, Cause Categories, Investigation Backlog | Learning Card with evidence and next action |
Tagsno overlap | CanvasDiscoveryScope | ValidationExperimentsDemandDiscovery | Root causeQualityOperations | ExperimentsValidationDiscoveryLearning |