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| Criterion |  Operations Fault Tree Analysis |  Knowledge Modeling Competency Questions |  Systems Thinking Current Reality Tree |  Operations Causal Factor Analysis |
|---|---|---|---|---|
Purposedifferent | 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. | Competency Questions translate a domain model into concrete questions that it must be able to answer. The method keeps the model's scope clean and prevents pretty but useless structures. | 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. | 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. |
Complexitydifferent | High | Medium | High | High |
Timedifferent | 2-6 h | 2-4 h | 2-6 h | 2-6 h |
Participantsdifferent | 3-8 | 2-8 | 3-8 | 3-10 |
Formatdifferent | Workshop + async | Workshop + async | Workshop | Workshop + async |
Outputdifferent | Fault Tree, Critical Paths, Cause Hypotheses, Control Actions | Competency Question Set, Required Concepts, Test Queries, Coverage Matrix | Current Reality Tree, Core Problems, Intervention Ideas | Event Timeline, Causal Factor Chart, Cause List, Corrective Actions |
Tagsno overlap | RiskRoot causeSafety | OntologyKnowledge graphScopeRequirementsSemantic | Systems thinkingRoot causeConstraintsCausality | CausalityIncidentRoot causeTimeline |