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| Criterion |  Operations Gemba Walk |  Facilitation 1-2-4-All |  Facilitation Nominal Group Technique |  Facilitation Dot Voting |
|---|---|---|---|---|
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. | 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. | When loud voices could dominate a round, Nominal Group Technique protects individual thinking time from group effects. It collects ideas separately first and only then enables shared weighting. | When a workshop has produced too many options and the group needs to condense quickly, dot voting makes preferences visible in a short time. It bundles individual votes into a solid signal for the next selection. |
Complexitydifferent | Low | Low | Medium | Low |
Timedifferent | 30-120 min | 10-20 min | 60-120 min | 5-15 min |
Participantsdifferent | 2-6 | 4-100+ | 5-12 | 3-20 |
Formatsame | Workshop | Workshop | Workshop | Workshop |
Outputdifferent | Observation Notes, Improvement Ideas | Idea List, Shared Insights, Emergent Themes | Ranked Ideas, Clarified Options, Group Priority | Ranked list, Consensus signal, Shortlist |
Tagsno overlap | LeanObservationProcessOperations | FacilitationInclusionIdeation | FacilitationPrioritizationVotingInclusion | FacilitationVotingConsensusPrioritization |