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| Criterion |  Innovation Double Diamond |  Product Discovery Problem Interview |  Product Discovery Test Card |
|---|---|---|---|
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. | The Test Card turns a critical assumption into a testable claim and specifies in advance which result counts as success. |
Complexitydifferent | Medium | Medium | Low |
Timedifferent | Wochen bis Monate | 30-60 min je Interview | 20-35 min |
Participantsdifferent | 3-12 | 5-12 Interviews | 1-5 |
Formatsame | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Problem Statement, Solution Options, Prototypes, Deliverables per Phase | Problem Evidence, Risk Notes, Customer Segments | Test Card with a pre-set threshold |
Tagsno overlap | ProcessDivergenceInnovation | DiscoveryInterviewsValidation | ExperimentsValidationDiscoveryHypothesis |
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