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| Criterion |  Operations Gemba Walk |  Innovation Reverse Brainstorming |  Facilitation 1-2-4-All |  Innovation Round Robin Brainstorming |
|---|---|---|---|---|
Purposedifferent | When there is uncertainty about the real course of a process, the method brings observation to the place where work happens. It combines perception, follow-up questions, and process knowledge so decisions rest on actual workflows instead of assumptions. | 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. | 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. |
Complexitysame | Low | Low | Low | Low |
Timedifferent | 30-120 min | 30-60 min | 10-20 min | 20-45 min |
Participantsdifferent | 2-6 | 3-12 | 4-100+ | 4-10 |
Formatsame | Workshop | Workshop | Workshop | Workshop |
Outputdifferent | Observation Notes, Improvement Ideas | Reverse Ideas, Risk Themes, Solution Ideas | Idea List, Shared Insights, Emergent Themes | Idea List, Cluster, Shortlist |
Tagsno overlap | LeanObservationProcessOperations | BrainstormingIdeationCreativityRisk | FacilitationInclusionIdeation | BrainstormingIdeationFacilitationInclusionCreativity |