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| Criterion |  Innovation Double Diamond |  Product Discovery Problem Interview |  Product Discovery Solution Interview |
|---|---|---|---|
Purposedifferent | For complex problems with a fuzzy situation, the method cleanly separates search space and decision. It first creates breadth in understanding and then focus in elaboration. This brings open questions, problem definition, and solution path into a traceable movement. | 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. |
Complexitysame | Medium | Medium | Medium |
Timedifferent | Wochen bis Monate | 30-60 min je Interview | 30-60 min je Interview |
Participantsdifferent | 3-12 | 5-12 Interviews | 5-10 Interviews |
Formatsame | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Problem Statement, Solution Options, Prototypes, Deliverables per Phase | Problem Evidence, Risk Notes, Customer Segments | Solution Feedback, Objection List, Validation Notes |
Tagsno overlap | ProcessDivergenceInnovation | DiscoveryInterviewsValidation | ValidationInterviewsPrototype |
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