View methods side by side.
Choose up to four methods. Add them using the search and share the comparison by copying its link.
| Criterion |  Decision Making Wideband Delphi |  Product Discovery Test Card |  Decision Making Delphi Method |  Product Discovery Fake Door Test |
|---|---|---|---|---|
Purposedifferent | A single opinion rarely holds up for planning when the future is genuinely uncertain. It separates options, evaluation criteria, and open risks. The result is captured as an Estimate Range, Assumption Log, and Expert Consensus Notes. | The Test Card turns a critical assumption into a testable claim and specifies in advance which result counts as success. | 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 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 | High | Low | High | Medium |
Timedifferent | 1-4 h or multiple rounds | 20-35 min | 1-4 Wochen | 1-5 Tage |
Participantsdifferent | 4-12 Experten | 1-5 | 6-30 Experten | Nutzertraffic |
Formatdifferent | Workshop + async | Workshop + async | Async | Async |
Outputdifferent | Estimate Range, Assumption Log, Expert Consensus Notes | Test Card with a pre-set threshold | Expert Forecast, Consensus Range, Assumption Notes | Click Data, Interest Signal, Learning Decision |
Tagsno overlap | EstimationExpertsForecasting | ExperimentsValidationDiscoveryHypothesis | ForecastingExpertsDecisionStrategy | ValidationExperimentsDemandDiscovery |