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| Criterion |  Operations Family Tree Analysis |  Systems Thinking Iceberg Model |  Operations Barrier Analysis |  Operations 5 Whys |
|---|---|---|---|---|
Purposedifferent | For a series of incidents with a similar pattern, the method arranges individual events as branches of a common origin. It makes visible which conditions keep recurring. | 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. | For a risk that can only be managed through multiple layers of protection, the method examines the effectiveness of each barrier. It shows where safeguards are missing, too weak, or fail under real conditions. | 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 | Medium | Low | Medium | Low |
Timedifferent | 2-4 h | 30-60 min | 2-4 h | 15-30 min |
Participantsdifferent | 2-6 | 2-10 | 2-6 | 2-6 |
Formatdifferent | Workshop + async | Workshop + async | Workshop + async | Workshop |
Outputdifferent | Family Tree Diagram, Pattern Notes, Systemic Measures | Iceberg Worksheet, Pattern Notes, Intervention Ideas | Barrier Inventory, Failure Analysis per Barrier, Action Backlog | Root cause notes, Countermeasures |
Tags1 shared | Root causePatternsIncidentSystemic | Systems thinkingRoot causePatterns | Root causeSafetyIncident | Root causeIncidentLeanProblem solving |