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| Criterion |  Systems Thinking Iceberg Model |  Systems Thinking Future Reality Tree |  Operations A3 Problem Solving |
|---|---|---|---|
Purposedifferent | The Iceberg Model separates visible events from patterns, structures, and mental models. This turns a single observation into a deeper understanding of why a problem keeps recurring. | 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. | 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 | Low | High | Medium |
Timedifferent | 30-60 min | 2-4 h | 45-90 min |
Participantsdifferent | 2-10 | 3-8 | 2-5 |
Formatdifferent | Workshop + async | Workshop | Workshop + async |
Outputdifferent | Iceberg Worksheet, Pattern Notes, Intervention Ideas | Future Reality Tree, Negative Branches, Assumption List, Improved Injections | A3 Report, Action Plan, Root Cause Analysis |
Tagsno overlap | Systems thinkingRoot causePatterns | Theory of ConstraintsSystems thinkingChange | LeanProblem solvingCoachingOperations |
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