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| Criterion |  Innovation Reverse Brainstorming |  Innovation Lean Startup |  Product Discovery Assumption Mapping |  Product Strategy Lean Canvas |
|---|---|---|---|---|
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 assumptions still sit unordered in the room, it weighs uncertainty against leverage. It makes visible which hypotheses should be checked first. | When an early product bet still has too many open points, it brings target group, problem, and assumptions into a single view. It condenses the idea so core risks become nameable. |
Complexitydifferent | Low | Medium | Medium | Medium |
Timedifferent | 30-60 min | Wochen bis Monate je Lernzyklus | 45-60 min | 45-90 min |
Participantsdifferent | 3-12 | 2-8 | 2-8 | 1-6 |
Formatdifferent | Workshop | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Reverse Ideas, Risk Themes, Solution Ideas | Hypothesis list, MVPs, Learning reports, Pivot or persevere decision | Assumption map, Test backlog, Risk ranking | Lean Canvas, Core Assumptions, Experiment Backlog |
Tagsno overlap | BrainstormingIdeationCreativityRisk | LeanStartupValidationMVP | AssumptionsRiskExperimentsValidation | StartupLeanAssumptionsBusiness model |