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Selected:Failure Scenario AnalysisCurrent Reality TreeFailure Mode and Effects AnalysisCausal Factor Analysis
| Criterion |  Engineering Failure Scenario Analysis |  Systems Thinking Current Reality Tree |  Operations Failure Mode and Effects Analysis |  Operations Causal Factor Analysis |
|---|---|---|---|---|
Purposedifferent | In critical processes, it is not enough to plan only for the normal case. Failure Scenario Analysis looks at the path into failure and shows which failures, chains, and control gaps cause the most damage. | 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 a process, product, or service with noticeable failure risks, the method assesses possible failure modes in advance. It directs attention to combinations of occurrence, effect, and detectability. | 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 | Medium | High | High | High |
Timedifferent | 1-3 h | 2-6 h | 2-6 h | 2-6 h |
Participantsdifferent | 3-8 | 3-8 | 3-10 | 3-10 |
Formatdifferent | Workshop | Workshop | Workshop | Workshop + async |
Outputdifferent | Failure Scenarios, Risk Notes, Control Gaps, Test and Response Actions | Current Reality Tree, Core Problems, Intervention Ideas | FMEA Table, Risk Priority, Mitigation Actions | Event Timeline, Causal Factor Chart, Cause List, Corrective Actions |
Tagsno overlap | FailureResilienceRisk | Systems thinkingRoot causeConstraintsCausality | RiskQualityOperationsRoot cause | CausalityIncidentRoot causeTimeline |