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| Criterion |  Systems Thinking Future Reality Tree |  Operations Fishbone Diagram |  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. | When a problem has several possible contributing factors, the method sorts causes by cause areas. It prevents an initial hunch from blocking the view of other plausible drivers. | 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 | High | Low | High |
Timedifferent | 2-4 h | 30-60 min | 2-6 h |
Participantsdifferent | 3-8 | 2-8 | 3-8 |
Formatsame | Workshop | Workshop | Workshop |
Outputdifferent | Future Reality Tree, Negative Branches, Assumption List, Improved Injections | Fishbone Diagram, Cause Categories, Investigation Backlog | Current Reality Tree, Core Problems, Intervention Ideas |
Tagsno overlap | Theory of ConstraintsSystems thinkingChange | Root causeQualityOperations | Systems thinkingRoot causeConstraintsCausality |
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