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| Criterion |  Product Discovery Solution Interview |  Decision Making Delphi Method |  Product Discovery Experiment Canvas |  Product Discovery Fake Door Test |
|---|---|---|---|---|
Purposedifferent | When a solution idea is already on the table, it checks how it is understood and evaluated. It looks for resonance, objections, and missing fit early in the conversation. | 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 experiments become unreadable after the fact, it arranges hypothesis, signal, and learning goal on a single canvas. It separates problem, assumption, solution, and evidence. The result is captured as a Completed Experiment Canvas and a Success Metric. | 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 | 30-60 min je Interview | 1-4 Wochen | 30-60 min | 1-5 Tage |
Participantsdifferent | 5-10 Interviews | 6-30 Experten | 1-5 | Nutzertraffic |
Formatdifferent | Workshop + async | Async | Workshop + async | Async |
Outputdifferent | Solution Feedback, Objection List, Validation Notes | Expert Forecast, Consensus Range, Assumption Notes | Completed Experiment Canvas, Success Metric | Click Data, Interest Signal, Learning Decision |
Tagsno overlap | ValidationInterviewsPrototype | ForecastingExpertsDecisionStrategy | ExperimentsValidationDiscoveryHypothesis | ValidationExperimentsDemandDiscovery |