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| Criterion |  Systems Thinking Future Reality Tree |  Architecture C4 Model |  Operations A3 Problem Solving |
|---|---|---|---|
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. | For a complex deviation with several people involved, the method bundles problem, analysis, and decision onto one page. It creates a shared working space where causes, countermeasures, and follow-up fit together. |
Complexitydifferent | High | Low | Medium |
Timedifferent | 2-4 h | 1-4 h | 45-90 min |
Participantsdifferent | 3-8 | 1-5 | 2-5 |
Formatdifferent | Workshop | Workshop + async | Workshop + async |
Outputdifferent | Future Reality Tree, Negative Branches, Assumption List, Improved Injections | Context Diagram, Container Diagram, Component Diagram | A3 Report, Action Plan, Root Cause Analysis |
Tagsno overlap | Theory of ConstraintsSystems thinkingChange | ArchitectureCommunicationVisualization | LeanProblem solvingCoachingOperations |
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