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| Criterion | ![]() Operations A3 Problem Solving | ![]() Operations 5 Whys | ![]() Systems Thinking Iceberg Model |
|---|---|---|---|
Purposedifferent | 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. | 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. | 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. |
Complexitydifferent | Medium | Low | Low |
Timedifferent | 45-90 min | 15-30 min | 30-60 min |
Participantsdifferent | 2-5 | 2-6 | 2-10 |
Formatdifferent | Workshop + async | Workshop | Workshop + async |
Outputdifferent | A3 Report, Action Plan, Root Cause Analysis | Root cause notes, Countermeasures | Iceberg Worksheet, Pattern Notes, Intervention Ideas |
Tagsno overlap | LeanProblem solvingCoachingOperations | Root causeIncidentLeanProblem solving | Systems thinkingRoot causePatterns |
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