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| Criterion |  Operations Barrier Analysis |  Operations Causal Factor Analysis |  Decision Making Assumption Surfacing |
|---|---|---|---|
Purposedifferent | For a risk that can only be managed through multiple layers of protection, the method examines the effectiveness of each barrier. It shows where safeguards are missing, too weak, or fail under real conditions. | For an event with a complicated course, the method breaks down the contributing factors along the timeline. It shows how conditions, decisions, and reactions together produce a course of events. | 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 | Low |
Timedifferent | 2-4 h | 2-6 h | 45-90 min |
Participantsdifferent | 2-6 | 3-10 | 2-8 |
Formatsame | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Barrier Inventory, Failure Analysis per Barrier, Action Backlog | Event Timeline, Causal Factor Chart, Cause List, Corrective Actions | Assumption List, Critical Assumptions, Learning Plan |
Tagsno overlap | Root causeSafetyIncident | CausalityIncidentRoot causeTimeline | AssumptionsRiskDecisionDiscovery |
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