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| Criterion |  Operations Causal Factor Analysis |  Operations Fault Tree Analysis |  Architecture ARID (Active Reviews for Intermediate Designs) |
|---|---|---|---|
Purposedifferent | 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. | 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. | ARID examines how well developers can work with a technical design. It focuses on a part of the system that can still be revised, between the architecture overview and the detailed specification. |
Complexitydifferent | High | High | Medium |
Timedifferent | 2-6 h | 2-6 h | 2–4 h review as a planning range; preparation and evaluation additional |
Participantsdifferent | 3-10 | 3-8 | Designers, developers as users, and facilitation |
Formatsame | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Event Timeline, Causal Factor Chart, Cause List, Corrective Actions | Fault Tree, Critical Paths, Cause Hypotheses, Control Actions | Prioritized development tasks, Jointly produced code or pseudocode, Observed difficulties and open design questions, Proposed design revisions |
Tagsno overlap | CausalityIncidentRoot causeTimeline | RiskRoot causeSafety | ArchitectureEngineeringFeedbackValidationTasks |
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