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| Criterion |  Decision Making Wideband Delphi |  Product Discovery Riskiest Assumption Test |  Product Strategy DIBB |  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. | When an idea hinges on one critical unknown, it prioritizes testing that exact piece of uncertainty first. It separates problem, assumption, solution, and evidence. The result is captured as a prioritized list of assumptions, a test plan, and a result report. | DIBB helps clarify target groups, value, goals, and priorities by making the logic behind a decision explicit. It captures results as a DIBB document, belief list, bet list, and learning report. | The Test Card turns a critical assumption into a testable claim and specifies in advance which result counts as success. |
Complexitydifferent | High | Medium | Low | Low |
Timedifferent | 1-4 h or multiple rounds | 1-2 Wochen pro Iteration | 1-2 h | 20-35 min |
Participantsdifferent | 4-12 Experten | 2-6 | 2-8 | 1-5 |
Formatsame | Workshop + async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Estimate Range, Assumption Log, Expert Consensus Notes | Prioritized Assumption List, Test Plan, Results Report | DIBB document, Belief list, Bet list, Learning report | Test Card with a pre-set threshold |
Tagsno overlap | EstimationExpertsForecasting | ExperimentsValidationDiscoveryAssumptions | StrategyDecisionAssumptionsHypothesis | ExperimentsValidationDiscoveryHypothesis |