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| Criterion |  Knowledge Modeling IBIS |  Systems Thinking Future Reality Tree |  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. | A Future Reality Tree shows how desired actions are meant to lead to a better system state. The method checks whether a path of change holds together logically before time flows into implementation. | When assumptions still sit unordered in the room, it weighs uncertainty against leverage. It makes visible which hypotheses should be checked first. |
Complexitydifferent | Medium | High | Medium |
Timedifferent | 1-3 h | 2-4 h | 45-60 min |
Participantsdifferent | 2-8 | 3-8 | 2-8 |
Formatdifferent | Workshop + async | Workshop | Workshop + async |
Outputdifferent | Issue Map, Positions, Argument Notes | Future Reality Tree, Negative Branches, Assumption List, Improved Injections | Assumption map, Test backlog, Risk ranking |
Tagsno overlap | RationaleKnowledgeDecision | Theory of ConstraintsSystems thinkingChange | AssumptionsRiskExperimentsValidation |
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