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| Criterion |  Knowledge Modeling IBIS |  Decision Making Assumption Surfacing |  Operations Failure Mode and Effects Analysis |  Operations Fishbone 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. | Plans often contain assumptions that were never openly stated and remain dangerous precisely because of that. Assumption Surfacing makes these silent premises visible and prioritizes which of them carry the initiative or could sink it. | For a process, product, or service with noticeable failure risks, the method assesses possible failure modes in advance. It directs attention to combinations of occurrence, effect, and detectability. | When a problem has several possible contributing factors, the method sorts causes by cause areas. It prevents an initial hunch from blocking the view of other plausible drivers. |
Complexitydifferent | Medium | Low | High | Low |
Timedifferent | 1-3 h | 45-90 min | 2-6 h | 30-60 min |
Participantsdifferent | 2-8 | 2-8 | 3-10 | 2-8 |
Formatdifferent | Workshop + async | Workshop + async | Workshop | Workshop |
Outputdifferent | Issue Map, Positions, Argument Notes | Assumption List, Critical Assumptions, Learning Plan | FMEA Table, Risk Priority, Mitigation Actions | Fishbone Diagram, Cause Categories, Investigation Backlog |
Tagsno overlap | RationaleKnowledgeDecision | AssumptionsRiskDecisionDiscovery | RiskQualityOperationsRoot cause | Root causeQualityOperations |