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| Criterion |  Engineering Failure Scenario Analysis |  Systems Thinking Future Reality Tree |  Systems Thinking Current Reality Tree |
|---|---|---|---|
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 Future Reality Tree shows how desired actions are meant to lead to a better system state. The method checks whether a path of change holds together logically before time flows into implementation. | 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 | High |
Timedifferent | 1-3 h | 2-4 h | 2-6 h |
Participantssame | 3-8 | 3-8 | 3-8 |
Formatsame | Workshop | Workshop | Workshop |
Outputdifferent | Failure Scenarios, Risk Notes, Control Gaps, Test and Response Actions | Future Reality Tree, Negative Branches, Assumption List, Improved Injections | Current Reality Tree, Core Problems, Intervention Ideas |
Tagsno overlap | FailureResilienceRisk | Theory of ConstraintsSystems thinkingChange | Systems thinkingRoot causeConstraintsCausality |
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