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| Criterion |  Facilitation Dot Voting |  Operations Barrier Analysis |  Facilitation Nominal Group Technique |  Operations 5 Whys |
|---|---|---|---|---|
Purposedifferent | 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. | For a risk that can only be managed through multiple layers of protection, the method examines the effectiveness of each barrier. It shows where safeguards are missing, too weak, or fail under real conditions. | 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. | For a single, hard-to-explain deviation, the method exposes the causal chain behind the visible symptom. It keeps the cause open until a controllable condition emerges instead of a mere description. |
Complexitydifferent | Low | Medium | Medium | Low |
Timedifferent | 5-15 min | 2-4 h | 60-120 min | 15-30 min |
Participantsdifferent | 3-20 | 2-6 | 5-12 | 2-6 |
Formatdifferent | Workshop | Workshop + async | Workshop | Workshop |
Outputdifferent | Ranked list, Consensus signal, Shortlist | Barrier Inventory, Failure Analysis per Barrier, Action Backlog | Ranked Ideas, Clarified Options, Group Priority | Root cause notes, Countermeasures |
Tagsno overlap | FacilitationVotingConsensusPrioritization | Root causeSafetyIncident | FacilitationPrioritizationVotingInclusion | Root causeIncidentLeanProblem solving |