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| Criterion |  Systems Thinking Future Reality Tree |  Architecture C4 Model |  Architecture Architecture Decision Record |
|---|---|---|---|
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. | 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. | An ADR permanently records an architecture decision with context, trade-offs, and consequence. It creates continuity for later changes because the decision path stays traceable. |
Complexitydifferent | High | Low | Low |
Timedifferent | 2-4 h | 1-4 h | 15-45 min |
Participantsdifferent | 3-8 | 1-5 | 1-3 |
Formatdifferent | Workshop | Workshop + async | Async |
Outputdifferent | Future Reality Tree, Negative Branches, Assumption List, Improved Injections | Context Diagram, Container Diagram, Component Diagram | ADR File, Decision Log, Rationale |
Tagsno overlap | Theory of ConstraintsSystems thinkingChange | ArchitectureCommunicationVisualization | ArchitectureRationaleDocumentationGovernance |
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