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| Criterion |  Facilitation 3-Circle Venn Diagram |  Knowledge Modeling IBIS |  Decision Making DACI |
|---|---|---|---|
Purposedifferent | When three perspectives matter at the same time, a Three-Circle Venn Diagram shows the overlaps and remainders precisely. It makes visible where shared effect arises and where only a partial perspective applies. | IBIS structures thinking about complex questions as a sequence of issues, ideas, and arguments. The method keeps discussions open without forcing them into premature consensus. | In cross-functional decisions, responsibilities quickly blur between approval, influence, and execution. DACI arranges these roles so decision pressure, contribution, and information stay cleanly separated. |
Complexitydifferent | Low | Medium | Low |
Timedifferent | 15-45 min | 1-3 h | 30-60 min |
Participantsdifferent | 2-8 | 2-8 | 2-10 |
Formatsame | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Venn Diagram, Overlap Notes, Differentiators | Issue Map, Positions, Argument Notes | DACI Matrix, Decision Owner, Decision Log |
Tagsno overlap | ComparisonFacilitationAlignment | RationaleKnowledgeDecision | DecisionRolesGovernanceAlignment |
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Methods with strong topical overlap with the current selection, not yet in the comparison.
