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| Criterion |  Innovation Design Thinking |  Product Discovery Problem Interview |  Innovation TRIZ |  Product Discovery Solution Interview |
|---|---|---|---|---|
Purposedifferent | 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 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. | For technical contradictions or trade-offs, the method looks for solutions that resolve opposing requirements at the same time. It translates limits into an explicit picture of conflict that becomes workable. This produces not just compromises but more elegant principles. | 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. |
Complexitydifferent | High | Medium | High | Medium |
Timedifferent | 1 Tag bis mehrere Wochen | 30-60 min je Interview | 1-4 h | 30-60 min je Interview |
Participantsdifferent | 4-10 | 5-12 Interviews | 2-8 | 5-10 Interviews |
Formatdifferent | Workshop | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Problem Statement, Prototype, Test Learnings | Problem Evidence, Risk Notes, Customer Segments | Contradiction Statement, Inventive Principles, Solution Concepts | Solution Feedback, Objection List, Validation Notes |
Tagsno overlap | InnovationPrototypeResearch | DiscoveryInterviewsValidation | InnovationProblem solvingContradictionsCreativity | ValidationInterviewsPrototype |