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| Criterion |  Knowledge Modeling Teach-back |  Operations Fault Tree Analysis |  DevOps Blameless Postmortem |  Operations Barrier Analysis |
|---|---|---|---|---|
Purposedifferent | Teach-back checks whether an explanation actually got through to the other person. The method makes misunderstandings visible early and strengthens shared understanding in advisory and learning situations. | For a critical top event with several possible triggers, the method logically models failure paths. It makes visible which combinations of conditions can lead to damage. | After an incident with damage or a near miss, the method creates a sober field for learning without assigning blame. It directs attention to the course of events, conditions, and effective countermeasures. | 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 | Medium |
Timedifferent | 5-20 min | 2-6 h | 30-90 min | 2-4 h |
Participantsdifferent | 2-8 | 3-8 | 3-12 | 2-6 |
Formatsame | Workshop + async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Understanding Check, Clarification Notes, Learning Gaps | Fault Tree, Critical Paths, Cause Hypotheses, Control Actions | Postmortem Doc, Action Items, Timeline | Barrier Inventory, Failure Analysis per Barrier, Action Backlog |
Tagsno overlap | LearningUnderstandingCommunication | RiskRoot causeSafety | Site Reliability EngineeringIncidentLearningReliability | Root causeSafetyIncident |