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| Criterion |  Innovation Double Diamond |  Innovation Design Thinking |  Product Discovery Solution Interview |  Product Discovery Problem 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. | For complex user problems with an uncertain cause, the method connects observation, interpretation, and experiment into a learning cycle. It keeps the focus on real needs and avoids premature solution language. This produces robust decisions for product and service. | 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. |
Complexitydifferent | Medium | High | Medium | Medium |
Timedifferent | Wochen bis Monate | 1 Tag bis mehrere Wochen | 30-60 min je Interview | 30-60 min je Interview |
Participantsdifferent | 3-12 | 4-10 | 5-10 Interviews | 5-12 Interviews |
Formatdifferent | Workshop + async | Workshop | Workshop + async | Workshop + async |
Outputdifferent | Problem Statement, Solution Options, Prototypes, Deliverables per Phase | Problem Statement, Prototype, Test Learnings | Solution Feedback, Objection List, Validation Notes | Problem Evidence, Risk Notes, Customer Segments |
Tagsno overlap | ProcessDivergenceInnovation | InnovationPrototypeResearch | ValidationInterviewsPrototype | DiscoveryInterviewsValidation |