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| Criterion |  Product Discovery Solution Interview |  Product Discovery Problem Interview |  Innovation Round Robin Brainstorming |  Facilitation 1-2-4-All |
|---|---|---|---|---|
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 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. | With unevenly distributed speaking time, the method brings every person into the contribution one after another. It prevents early voices from setting the direction while still producing a shared idea space. This makes participation plannable and the team's diversity visible. | 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. |
Complexitydifferent | Medium | Medium | Low | Low |
Timedifferent | 30-60 min je Interview | 30-60 min je Interview | 20-45 min | 10-20 min |
Participantsdifferent | 5-10 Interviews | 5-12 Interviews | 4-10 | 4-100+ |
Formatdifferent | Workshop + async | Workshop + async | Workshop | Workshop |
Outputdifferent | Solution Feedback, Objection List, Validation Notes | Problem Evidence, Risk Notes, Customer Segments | Idea List, Cluster, Shortlist | Idea List, Shared Insights, Emergent Themes |
Tagsno overlap | ValidationInterviewsPrototype | DiscoveryInterviewsValidation | BrainstormingIdeationFacilitationInclusionCreativity | FacilitationInclusionIdeation |