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| Criterion |  Product Discovery Problem Interview |  Innovation Crazy 8s |  Product Discovery Solution Interview |  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. | With only a few minutes available and a still-fuzzy solution search, the method forces a wide range of variants. It produces fast sketches before the first idea can settle in, making different directions directly comparable and open to further development. | 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 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 | Low | Medium | High |
Timedifferent | 30-60 min je Interview | 8-15 min | 30-60 min je Interview | 4-5 Tage |
Participantsdifferent | 5-12 Interviews | 1-10 | 5-10 Interviews | 5-8 |
Formatdifferent | Workshop + async | Workshop | Workshop + async | Workshop |
Outputdifferent | Problem Evidence, Risk Notes, Customer Segments | Sketch Set, Idea Shortlist, Direction Options | Solution Feedback, Objection List, Validation Notes | Prototype, Test Findings, Decision Rationale |
Tagsno overlap | DiscoveryInterviewsValidation | BrainstormingSketchingSpeedDivergenceDesign sprint | ValidationInterviewsPrototype | Design sprintPrototypeValidationInnovation |