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| Criterion |  Systems Thinking Current Reality Tree |  Knowledge Modeling Feynman Technique |  Operations Causal Factor Analysis |  DevOps Blameless Postmortem |
|---|---|---|---|---|
Purposedifferent | A Current Reality Tree condenses many symptoms into a few causal chains. The method makes visible which core problems drive several negative effects at once. | The Feynman Technique checks understanding by explaining a topic so that it stays easy for others to understand. It makes knowledge gaps visible before they become costly in everyday work. | For an event with a complicated course, the method breaks down the contributing factors along the timeline. It shows how conditions, decisions, and reactions together produce a course of events. | 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. |
Complexitydifferent | High | Low | High | Medium |
Timedifferent | 2-6 h | 20-60 min | 2-6 h | 30-90 min |
Participantsdifferent | 3-8 | 1 | 3-10 | 3-12 |
Formatdifferent | Workshop | Async | Workshop + async | Workshop + async |
Outputdifferent | Current Reality Tree, Core Problems, Intervention Ideas | Plain-language Explanation, Knowledge Gaps, Study Notes | Event Timeline, Causal Factor Chart, Cause List, Corrective Actions | Postmortem Doc, Action Items, Timeline |
Tagsno overlap | Systems thinkingRoot causeConstraintsCausality | LearningKnowledgeUnderstanding | CausalityIncidentRoot causeTimeline | Site Reliability EngineeringIncidentLearningReliability |