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| Criterion |  Knowledge Modeling IBIS |  Decision Making Delphi Method |  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. | When knowledge is distributed and direct dominance should be avoided, groups quickly fall under the sway of their opinion leaders. The Delphi Method gathers assessments iteratively and gradually brings expert judgments closer together. | 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 | High | Low | Medium |
Timedifferent | 1-3 h | 1-4 Wochen | 1-5 Tage | 1-5 Tage |
Participantsdifferent | 2-8 | 6-30 Experten | Nutzertraffic | Nutzertraffic |
Formatdifferent | Workshop + async | Async | Async | Async |
Outputdifferent | Issue Map, Positions, Argument Notes | Expert Forecast, Consensus Range, Assumption Notes | Interest Metrics, Conversion Signal, Learning Note | Click Data, Interest Signal, Learning Decision |
Tagsno overlap | RationaleKnowledgeDecision | ForecastingExpertsDecisionStrategy | ValidationExperimentsDemandGrowth | ValidationExperimentsDemandDiscovery |