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| Criterion |  Innovation Lean Startup |  Product Discovery Pretotyping |  Innovation Reverse Brainstorming |  Innovation Brainstorming |
|---|---|---|---|---|
Purposedifferent | 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. | Pretotyping clarifies whether a customer problem and solution idea create enough real demand. It separates problem, assumption, solution, and evidence, and captures the result as a pretotyping sketch, test setup, and conversion data. | 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. | 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 | Medium | Low | Low | Low |
Timedifferent | Wochen bis Monate je Lernzyklus | Stunden bis wenige Tage | 30-60 min | 30-60 min |
Participantsdifferent | 2-8 | 1-4 | 3-12 | 4-12 |
Formatdifferent | Workshop + async | Workshop + async | Workshop | Workshop |
Outputdifferent | Hypothesis list, MVPs, Learning reports, Pivot or persevere decision | Pretotyping sketch, Test setup, Conversion data, Go or no-go decision | Reverse Ideas, Risk Themes, Solution Ideas | Idea pool, Theme clusters, Shortlist |
Tagsno overlap | LeanStartupValidationMVP | ValidationDemandMVP | BrainstormingIdeationCreativityRisk | BrainstormingIdeationCreativityWorkshopDivergence |