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| Criterion |  Knowledge Modeling IBIS |  Decision Making Pre-Mortem |  Facilitation 3-Circle Venn Diagram |
|---|---|---|---|
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. | In early initiatives with many uncertainties, planning quickly turns too optimistic. A pre-mortem makes the expected failure visible in advance and sharpens the view of causes, gaps, and countermeasures. | 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. |
Complexitydifferent | Medium | Low | Low |
Timedifferent | 1-3 h | 20–45 min | 15-45 min |
Participantsdifferent | 2-8 | Small cross-functional group | 2-8 |
Formatdifferent | Workshop + async | Workshop | Workshop + async |
Outputdifferent | Issue Map, Positions, Argument Notes | Risk list, Mitigation plan, Assumption log | Venn Diagram, Overlap Notes, Differentiators |
Tagsno overlap | RationaleKnowledgeDecision | RiskDecisionFailurePlanning | ComparisonFacilitationAlignment |
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Methods with strong topical overlap with the current selection, not yet in the comparison.
