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| Criterion |  Operations Change Analysis |  Operations Fault Tree Analysis |  Delivery Cost of Delay |  Decision Making Assumption Surfacing |
|---|---|---|---|---|
Purposedifferent | For a deviation after a change, the method isolates the influence of the altered condition. It narrows down which differences are relevant and which are just accompanying noise. | For a critical top event with several possible triggers, the method logically models failure paths. It makes visible which combinations of conditions can lead to damage. | Helps clarify scope, order, and delivery flow in concrete terms. It makes work, constraints, and sequence manageable. The result is captured as a Cost of Delay table and prioritization sequence. | 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. |
Complexitydifferent | Medium | High | High | Low |
Timedifferent | 45-120 min | 2-6 h | 90-180 min | 45-90 min |
Participantsdifferent | 2-6 | 3-8 | 3-8 | 2-8 |
Formatdifferent | Workshop + async | Workshop + async | Workshop | Workshop + async |
Outputdifferent | Change Matrix, Cause Hypotheses, Validation Questions, Action List | Fault Tree, Critical Paths, Cause Hypotheses, Control Actions | CoD Table, Prioritization Sequence | Assumption List, Critical Assumptions, Learning Plan |
Tagsno overlap | ChangeRoot causeTroubleshootingComparison | RiskRoot causeSafety | PrioritizationDeliveryEconomicsDecision | AssumptionsRiskDecisionDiscovery |