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| Criterion |  Innovation Double Diamond |  Product Discovery Solution Interview |  Product Discovery Riskiest Assumption Test |  Innovation Design Sprint |
|---|---|---|---|---|
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 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 an idea hinges on one critical unknown, it prioritizes testing that exact piece of uncertainty first. It separates problem, assumption, solution, and evidence. The result is captured as a prioritized list of assumptions, a test plan, and a result report. | 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 | Medium | High |
Timedifferent | Wochen bis Monate | 30-60 min je Interview | 1-2 Wochen pro Iteration | 4-5 Tage |
Participantsdifferent | 3-12 | 5-10 Interviews | 2-6 | 5-8 |
Formatdifferent | Workshop + async | Workshop + async | Workshop + async | Workshop |
Outputdifferent | Problem Statement, Solution Options, Prototypes, Deliverables per Phase | Solution Feedback, Objection List, Validation Notes | Prioritized Assumption List, Test Plan, Results Report | Prototype, Test Findings, Decision Rationale |
Tagsno overlap | ProcessDivergenceInnovation | ValidationInterviewsPrototype | ExperimentsValidationDiscoveryAssumptions | Design sprintPrototypeValidationInnovation |