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Selected:Double DiamondSolution InterviewARID (Active Reviews for Intermediate Designs)Problem Interview
| Criterion |  Innovation Double Diamond |  Product Discovery Solution Interview |  Architecture ARID (Active Reviews for Intermediate Designs) |  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. | 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. | ARID examines how well developers can work with a technical design. It focuses on a part of the system that can still be revised, between the architecture overview and the detailed specification. | 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. |
Complexitysame | Medium | Medium | Medium | Medium |
Timedifferent | Wochen bis Monate | 30-60 min je Interview | 2–4 h review as a planning range; preparation and evaluation additional | 30-60 min je Interview |
Participantsdifferent | 3-12 | 5-10 Interviews | Designers, developers as users, and facilitation | 5-12 Interviews |
Formatsame | Workshop + async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Problem Statement, Solution Options, Prototypes, Deliverables per Phase | Solution Feedback, Objection List, Validation Notes | Prioritized development tasks, Jointly produced code or pseudocode, Observed difficulties and open design questions, Proposed design revisions | Problem Evidence, Risk Notes, Customer Segments |
Tagsno overlap | ProcessDivergenceInnovation | ValidationInterviewsPrototype | ArchitectureEngineeringFeedbackValidationTasks | DiscoveryInterviewsValidation |