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| Criterion |  Systems Thinking Future Reality Tree |  Operations Causal Factor Analysis |  Operations Root Cause Tree Analysis |
|---|---|---|---|
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 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. | For a problem with several suspected causes, the method builds a causal structure instead of a mere list. It makes visible how causes connect and where the strongest points of leverage lie. |
Complexitydifferent | High | High | Medium |
Timedifferent | 2-4 h | 2-6 h | 1-3 h |
Participantsdifferent | 3-8 | 3-10 | 2-8 |
Formatdifferent | Workshop | Workshop + async | Workshop |
Outputdifferent | Future Reality Tree, Negative Branches, Assumption List, Improved Injections | Event Timeline, Causal Factor Chart, Cause List, Corrective Actions | Cause Tree, Evidence Notes, Countermeasures |
Tagsno overlap | Theory of ConstraintsSystems thinkingChange | CausalityIncidentRoot causeTimeline | Root causeTreeIncidentQuality |
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