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| Criterion |  Systems Thinking Future Reality Tree |  Operations Fault Tree Analysis |  Systems Thinking Current Reality Tree |
|---|---|---|---|
Purposedifferent | 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. | 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. | 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. |
Complexitysame | High | High | High |
Timedifferent | 2-4 h | 2-6 h | 2-6 h |
Participantssame | 3-8 | 3-8 | 3-8 |
Formatdifferent | Workshop | Workshop + async | Workshop |
Outputdifferent | Future Reality Tree, Negative Branches, Assumption List, Improved Injections | Fault Tree, Critical Paths, Cause Hypotheses, Control Actions | Current Reality Tree, Core Problems, Intervention Ideas |
Tagsno overlap | Theory of ConstraintsSystems thinkingChange | RiskRoot causeSafety | Systems thinkingRoot causeConstraintsCausality |
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Methods with strong topical overlap with the current selection, not yet in the comparison.
