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| Criterion |  Decision Making Wideband Delphi |  Product Discovery Learning Card |  Product Discovery MVP Test Matrix |  Product Discovery Test Card |
|---|---|---|---|---|
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 Learning Card connects traceable test results to a reasoned next action while keeping the limits of the insight visible. | When several minimal variants compete to answer the same question, it makes comparing and choosing between them cleaner. It separates problem, assumption, solution, and evidence. The result is captured as a Test Matrix and a Test Plan. | The Test Card turns a critical assumption into a testable claim and specifies in advance which result counts as success. |
Complexitydifferent | High | Low | Medium | Low |
Timedifferent | 1-4 h or multiple rounds | 25-40 min | 45-75 min | 20-35 min |
Participantsdifferent | 4-12 Experten | 1-5 | 2-8 | 1-5 |
Formatdifferent | Workshop + async | Workshop + async | Workshop | Workshop + async |
Outputdifferent | Estimate Range, Assumption Log, Expert Consensus Notes | Learning Card with evidence and next action | Test Matrix, Test Plan | Test Card with a pre-set threshold |
Tagsno overlap | EstimationExpertsForecasting | ExperimentsValidationDiscoveryLearning | ExperimentsValidationDiscoveryOptions | ExperimentsValidationDiscoveryHypothesis |