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| Criterion |  Systems Thinking Future Reality Tree |  Systems Thinking Current Reality Tree |  Architecture C4 Model |
|---|---|---|---|
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. | 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. | The C4 Model makes a system legible across several resolution levels, from context down to code. It suits situations where different audiences need to understand the same architecture from different altitudes. |
Complexitydifferent | High | High | Low |
Timedifferent | 2-4 h | 2-6 h | 1-4 h |
Participantsdifferent | 3-8 | 3-8 | 1-5 |
Formatdifferent | Workshop | Workshop | Workshop + async |
Outputdifferent | Future Reality Tree, Negative Branches, Assumption List, Improved Injections | Current Reality Tree, Core Problems, Intervention Ideas | Context Diagram, Container Diagram, Component Diagram |
Tagsno overlap | Theory of ConstraintsSystems thinkingChange | Systems thinkingRoot causeConstraintsCausality | ArchitectureCommunicationVisualization |
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