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| Criterion |  Operations DMAIC |  Systems Thinking Iceberg Model |  Systems Thinking Current Reality Tree |
|---|---|---|---|
Purposedifferent | For a process problem with fluctuating performance, the method brings analysis and improvement into a disciplined sequence. It creates a framework in which numbers, causes, and control come together. | 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 Current Reality Tree condenses many symptoms into a few causal chains. The method makes visible which core problems drive several negative effects at once. |
Complexitydifferent | High | Low | High |
Timedifferent | 2-12 Wochen | 30-60 min | 2-6 h |
Participantsdifferent | 3-10 | 2-10 | 3-8 |
Formatdifferent | Workshop + async | Workshop + async | Workshop |
Outputdifferent | Project Charter, Measurement Plan, Cause Analysis, Control Plan | Iceberg Worksheet, Pattern Notes, Intervention Ideas | Current Reality Tree, Core Problems, Intervention Ideas |
Tagsno overlap | Continuous improvementQualityProcess improvement | Systems thinkingRoot causePatterns | Systems thinkingRoot causeConstraintsCausality |
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