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| Criterion |  Innovation Design Thinking |  Product Discovery Solution Interview |  Facilitation 1-2-4-All |  Facilitation Nominal Group Technique |
|---|---|---|---|---|
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 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 many people in a group too rarely get to speak, 1-2-4-All distributes thinking time more fairly. The format builds participation step by step and makes quiet or still-unformed thoughts usable faster. | When loud voices could dominate a round, Nominal Group Technique protects individual thinking time from group effects. It collects ideas separately first and only then enables shared weighting. |
Complexitydifferent | High | Medium | Low | Medium |
Timedifferent | 1 Tag bis mehrere Wochen | 30-60 min je Interview | 10-20 min | 60-120 min |
Participantsdifferent | 4-10 | 5-10 Interviews | 4-100+ | 5-12 |
Formatdifferent | Workshop | Workshop + async | Workshop | Workshop |
Outputdifferent | Problem Statement, Prototype, Test Learnings | Solution Feedback, Objection List, Validation Notes | Idea List, Shared Insights, Emergent Themes | Ranked Ideas, Clarified Options, Group Priority |
Tagsno overlap | InnovationPrototypeResearch | ValidationInterviewsPrototype | FacilitationInclusionIdeation | FacilitationPrioritizationVotingInclusion |