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| Criterion |  Operations Fishbone Diagram |  Systems Thinking Iceberg Model |  Systems Thinking Current Reality Tree |
|---|---|---|---|
Purposedifferent | When a problem has several possible contributing factors, the method sorts causes by cause areas. It prevents an initial hunch from blocking the view of other plausible drivers. | 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 | Low | Low | High |
Timedifferent | 30-60 min | 30-60 min | 2-6 h |
Participantsdifferent | 2-8 | 2-10 | 3-8 |
Formatdifferent | Workshop | Workshop + async | Workshop |
Outputdifferent | Fishbone Diagram, Cause Categories, Investigation Backlog | Iceberg Worksheet, Pattern Notes, Intervention Ideas | Current Reality Tree, Core Problems, Intervention Ideas |
Tags1 shared | Root causeQualityOperations | Systems thinkingRoot causePatterns | Systems thinkingRoot causeConstraintsCausality |
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