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| Criterion |  Product Discovery Problem Interview |  Product Discovery Solution Interview |  Facilitation 1-2-4-All |  Innovation Design Sprint |
|---|---|---|---|---|
Purposedifferent | 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. | 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 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 product question is unclear and time pressure is high, the method takes a team from an open idea to a testable solution. It connects problem understanding, decision, and learning in one compact format, lowering the risk of spending a lot of energy on a mere guess. |
Complexitydifferent | Medium | Medium | Low | High |
Timedifferent | 30-60 min je Interview | 30-60 min je Interview | 10-20 min | 4-5 Tage |
Participantsdifferent | 5-12 Interviews | 5-10 Interviews | 4-100+ | 5-8 |
Formatdifferent | Workshop + async | Workshop + async | Workshop | Workshop |
Outputdifferent | Problem Evidence, Risk Notes, Customer Segments | Solution Feedback, Objection List, Validation Notes | Idea List, Shared Insights, Emergent Themes | Prototype, Test Findings, Decision Rationale |
Tagsno overlap | DiscoveryInterviewsValidation | ValidationInterviewsPrototype | FacilitationInclusionIdeation | Design sprintPrototypeValidationInnovation |