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Selected:Failure Scenario AnalysisCurrent Reality TreeChange AnalysisFailure Mode and Effects Analysis
| Criterion |  Engineering Failure Scenario Analysis |  Systems Thinking Current Reality Tree |  Operations Change Analysis |  Operations Failure Mode and Effects 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 deviation after a change, the method isolates the influence of the altered condition. It narrows down which differences are relevant and which are just accompanying noise. | 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. |
Complexitydifferent | Medium | High | Medium | High |
Timedifferent | 1-3 h | 2-6 h | 45-120 min | 2-6 h |
Participantsdifferent | 3-8 | 3-8 | 2-6 | 3-10 |
Formatdifferent | Workshop | Workshop | Workshop + async | Workshop |
Outputdifferent | Failure Scenarios, Risk Notes, Control Gaps, Test and Response Actions | Current Reality Tree, Core Problems, Intervention Ideas | Change Matrix, Cause Hypotheses, Validation Questions, Action List | FMEA Table, Risk Priority, Mitigation Actions |
Tagsno overlap | FailureResilienceRisk | Systems thinkingRoot causeConstraintsCausality | ChangeRoot causeTroubleshootingComparison | RiskQualityOperationsRoot cause |