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| Criterion |  Operations Barrier Analysis |  Operations Causal Factor Analysis |  Delivery Communication Plan |  Systems Thinking Current Reality Tree |
|---|---|---|---|---|
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. | When many people need to be informed in parallel and messages would otherwise arrive unevenly or too late, a Communication Plan orders communication reliably. Channels, audiences, and cadences interlock so important information doesn't get lost. | A Current Reality Tree condenses many symptoms into a few causal chains. The method makes visible which core problems drive several negative effects at once. |
Complexitydifferent | Medium | High | Low | High |
Timedifferent | 2-4 h | 2-6 h | 45-90 min | 2-6 h |
Participantsdifferent | 2-6 | 3-10 | 2-6 | 3-8 |
Formatdifferent | Workshop + async | Workshop + async | Workshop + async | Workshop |
Outputdifferent | Barrier Inventory, Failure Analysis per Barrier, Action Backlog | Event Timeline, Causal Factor Chart, Cause List, Corrective Actions | Communication Plan, Channel Matrix, Message Cadence | Current Reality Tree, Core Problems, Intervention Ideas |
Tagsno overlap | Root causeSafetyIncident | CausalityIncidentRoot causeTimeline | CommunicationStakeholdersDeliveryPlanning | Systems thinkingRoot causeConstraintsCausality |