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| Criterion |  DevOps Blameless Postmortem |  DevOps ChatOps |  Systems Thinking Stock and Flow Diagram |  Systems Thinking Causal Loop Diagram |
|---|---|---|---|---|
Purposedifferent | 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 operational work in a distributed team, the method links communication with direct system control. It records decisions right where the signal, the context, and the execution come together. | A Stock and Flow Diagram shows how stocks, inflows, and outflows shape a system over time. It is especially suited when growth, delays, or capacity limits determine the dynamics. | A Causal Loop Diagram makes feedback, reinforcement, and balance in a system legible. It uncovers side effects and self-reinforcement that stay hidden in linear explanations. |
Complexitydifferent | Medium | Medium | High | Medium |
Timedifferent | 30-90 min | Ongoing | 2-6 h | 1-3 h |
Participantsdifferent | 3-12 | 2-20 | 1-6 | 2-8 |
Formatdifferent | Workshop + async | Workshop + async | Workshop + async | Workshop |
Outputdifferent | Postmortem Doc, Action Items, Timeline | Chat Transcript, Action Log, Automations | Stock and Flow Model, Dynamics Notes, Simulation Hypotheses | Causal Loop Diagram, Feedback Notes, Leverage Points |
Tagsno overlap | Site Reliability EngineeringIncidentLearningReliability | CollaborationEngineeringIncident | DynamicsSimulationFeedbackSystems thinking | FeedbackSystems thinkingCausalityDynamics |