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| Criterion |  Innovation Lean Startup |  Innovation Round Robin Brainstorming |  Innovation Reverse Brainstorming |  Facilitation 1-2-4-All |
|---|---|---|---|---|
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. | With unevenly distributed speaking time, the method brings every person into the contribution one after another. It prevents early voices from setting the direction while still producing a shared idea space. This makes participation plannable and the team's diversity visible. | 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 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. |
Complexitydifferent | Medium | Low | Low | Low |
Timedifferent | Wochen bis Monate je Lernzyklus | 20-45 min | 30-60 min | 10-20 min |
Participantsdifferent | 2-8 | 4-10 | 3-12 | 4-100+ |
Formatdifferent | Workshop + async | Workshop | Workshop | Workshop |
Outputdifferent | Hypothesis list, MVPs, Learning reports, Pivot or persevere decision | Idea List, Cluster, Shortlist | Reverse Ideas, Risk Themes, Solution Ideas | Idea List, Shared Insights, Emergent Themes |
Tagsno overlap | LeanStartupValidationMVP | BrainstormingIdeationFacilitationInclusionCreativity | BrainstormingIdeationCreativityRisk | FacilitationInclusionIdeation |