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| Criterion |  Innovation Reverse Brainstorming |  Innovation Lean Startup |  Product Discovery Riskiest Assumption Test |  Innovation Brainstorming |
|---|---|---|---|---|
Purposedifferent | For persistent errors or blockages, the method shifts the view to the opposite of the desired effect. It exposes the mechanics of failure and makes hidden causes easier to grasp. This makes improvement more concrete and the problem clearer. | For uncertain business assumptions, the method forces the idea into contact with real market reactions early. It separates wishful picture, assumption, and observable behavior, so that learning becomes faster than planning. This translates uncertainty into measurable insight. | 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 a team faces an open question with many obvious directions, the method first creates breadth instead of premature commitment. It separates idea flow from evaluation and makes lines of thought visible, creating a pool for selection and further development. |
Complexitydifferent | Low | Medium | Medium | Low |
Timedifferent | 30-60 min | Wochen bis Monate je Lernzyklus | 1-2 Wochen pro Iteration | 30-60 min |
Participantsdifferent | 3-12 | 2-8 | 2-6 | 4-12 |
Formatdifferent | Workshop | Workshop + async | Workshop + async | Workshop |
Outputdifferent | Reverse Ideas, Risk Themes, Solution Ideas | Hypothesis list, MVPs, Learning reports, Pivot or persevere decision | Prioritized Assumption List, Test Plan, Results Report | Idea pool, Theme clusters, Shortlist |
Tagsno overlap | BrainstormingIdeationCreativityRisk | LeanStartupValidationMVP | ExperimentsValidationDiscoveryAssumptions | BrainstormingIdeationCreativityWorkshopDivergence |