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| Criterion |  Knowledge Modeling IBIS |  Facilitation 3-Circle Venn Diagram |  Product Discovery Assumption Mapping |
|---|---|---|---|
Purposedifferent | 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. | 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. | When assumptions still sit unordered in the room, it weighs uncertainty against leverage. It makes visible which hypotheses should be checked first. |
Complexitydifferent | Medium | Low | Medium |
Timedifferent | 1-3 h | 15-45 min | 45-60 min |
Participantssame | 2-8 | 2-8 | 2-8 |
Formatsame | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Issue Map, Positions, Argument Notes | Venn Diagram, Overlap Notes, Differentiators | Assumption map, Test backlog, Risk ranking |
Tagsno overlap | RationaleKnowledgeDecision | ComparisonFacilitationAlignment | AssumptionsRiskExperimentsValidation |
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Methods with strong topical overlap with the current selection, not yet in the comparison.
