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| Criterion |  Operations 5 Whys |  Systems Thinking System Dynamics Simulation |  Operations Barrier Analysis |
|---|---|---|---|
Purposedifferent | 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. | System Dynamics Simulation makes assumptions about time, delay, and feedback testable through experiments. It draws relationships, patterns, and feedback loops. The result is captured as a simulation model and scenario reports. | 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. |
Complexitydifferent | Low | High | Medium |
Timedifferent | 15-30 min | Mehrere Tage bis Wochen | 2-4 h |
Participantsdifferent | 2-6 | 1-5 Modellierende, Stakeholder asynchron | 2-6 |
Formatdifferent | Workshop | Async | Workshop + async |
Outputdifferent | Root cause notes, Countermeasures | Simulation Model, Scenario Reports | Barrier Inventory, Failure Analysis per Barrier, Action Backlog |
Tagsno overlap | Root causeIncidentLeanProblem solving | Systems thinkingDynamicsSimulationAnalysis | Root causeSafetyIncident |
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