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| Criterion |  Knowledge Modeling IBIS |  Knowledge Modeling Knowledge Mapping |  Product Discovery Smoke Test |  Product Discovery Fake Door Test |
|---|---|---|---|---|
Purposedifferent | IBIS structures thinking about complex questions as a sequence of issues, ideas, and arguments. The method keeps discussions open without forcing them into premature consensus. | Knowledge Mapping makes knowledge, gaps, and transfer paths visible across a field. It fits when expertise should not just exist but also be findable and transferable. | 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 | Medium | Low | Medium |
Timedifferent | 1-3 h | 1-3 h | 1-5 Tage | 1-5 Tage |
Participantsdifferent | 2-8 | 3-12 | Nutzertraffic | Nutzertraffic |
Formatdifferent | Workshop + async | Workshop | Async | Async |
Outputdifferent | Issue Map, Positions, Argument Notes | Knowledge Map, Critical Knowledge Areas, Transfer Plan | Interest Metrics, Conversion Signal, Learning Note | Click Data, Interest Signal, Learning Decision |
Tagsno overlap | RationaleKnowledgeDecision | KnowledgeMappingRisk | ValidationExperimentsDemandGrowth | ValidationExperimentsDemandDiscovery |