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| Criterion |  Architecture Architecture Decision Record |  Systems Thinking Causal Loop Diagram |  Operations 5 Whys |
|---|---|---|---|
Purposedifferent | 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. | A Causal Loop Diagram makes feedback, reinforcement, and balance in a system legible. It uncovers side effects and self-reinforcement that stay hidden in linear explanations. | For a single, hard-to-explain deviation, the method exposes the causal chain behind the visible symptom. It keeps the cause open until a controllable condition emerges instead of a mere description. |
Complexitydifferent | Low | Medium | Low |
Timedifferent | 15-45 min | 1-3 h | 15-30 min |
Participantsdifferent | 1-3 | 2-8 | 2-6 |
Formatdifferent | Async | Workshop | Workshop |
Outputdifferent | ADR File, Decision Log, Rationale | Causal Loop Diagram, Feedback Notes, Leverage Points | Root cause notes, Countermeasures |
Tagsno overlap | ArchitectureRationaleDocumentationGovernance | FeedbackSystems thinkingCausalityDynamics | Root causeIncidentLeanProblem solving |
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