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| Criterion |  Operations Barrier Analysis |  Systems Thinking Behavior Over Time Graph |  Operations 5 Whys |
|---|---|---|---|
Purposedifferent | 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. | A Behavior Over Time Graph shows how a metric or observation develops over time. The method makes trends, breaks, and recurring patterns visible that get lost in snapshots. | 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 | Low |
Timedifferent | 2-4 h | 20-45 min | 15-30 min |
Participantsdifferent | 2-6 | 1-10 | 2-6 |
Formatdifferent | Workshop + async | Workshop + async | Workshop |
Outputdifferent | Barrier Inventory, Failure Analysis per Barrier, Action Backlog | Behavior Over Time Graph, Trend Hypotheses, Key Events | Root cause notes, Countermeasures |
Tagsno overlap | Root causeSafetyIncident | Systems thinkingPatternsDynamics | Root causeIncidentLeanProblem solving |
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