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| Criterion |  Product Discovery Solution Interview |  Decision Making Delphi Method |  Product Discovery Test Card |
|---|---|---|---|
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. | The Test Card turns a critical assumption into a testable claim and specifies in advance which result counts as success. |
Complexitydifferent | Medium | High | Low |
Timedifferent | 30-60 min je Interview | 1-4 Wochen | 20-35 min |
Participantsdifferent | 5-10 Interviews | 6-30 Experten | 1-5 |
Formatdifferent | Workshop + async | Async | Workshop + async |
Outputdifferent | Solution Feedback, Objection List, Validation Notes | Expert Forecast, Consensus Range, Assumption Notes | Test Card with a pre-set threshold |
Tagsno overlap | ValidationInterviewsPrototype | ForecastingExpertsDecisionStrategy | ExperimentsValidationDiscoveryHypothesis |
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