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| Criterion |  Product Discovery Solution Interview |  Facilitation Nominal Group Technique |  Facilitation 1-2-4-All |  Product Discovery Problem Interview |
|---|---|---|---|---|
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 loud voices could dominate a round, Nominal Group Technique protects individual thinking time from group effects. It collects ideas separately first and only then enables shared weighting. | When many people in a group too rarely get to speak, 1-2-4-All distributes thinking time more fairly. The format builds participation step by step and makes quiet or still-unformed thoughts usable faster. | When the picture of the problem still needs to become solid, it asks about real situations and consequences. It separates genuine suffering from mere interest in a solution. |
Complexitydifferent | Medium | Medium | Low | Medium |
Timedifferent | 30-60 min je Interview | 60-120 min | 10-20 min | 30-60 min je Interview |
Participantsdifferent | 5-10 Interviews | 5-12 | 4-100+ | 5-12 Interviews |
Formatdifferent | Workshop + async | Workshop | Workshop | Workshop + async |
Outputdifferent | Solution Feedback, Objection List, Validation Notes | Ranked Ideas, Clarified Options, Group Priority | Idea List, Shared Insights, Emergent Themes | Problem Evidence, Risk Notes, Customer Segments |
Tagsno overlap | ValidationInterviewsPrototype | FacilitationPrioritizationVotingInclusion | FacilitationInclusionIdeation | DiscoveryInterviewsValidation |