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Selected:Stock and Flow DiagramBlameless PostmortemChatOpsARID (Active Reviews for Intermediate Designs)
| Criterion |  Systems Thinking Stock and Flow Diagram |  DevOps Blameless Postmortem |  DevOps ChatOps |  Architecture ARID (Active Reviews for Intermediate Designs) |
|---|---|---|---|---|
Purposedifferent | 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. | 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. | ARID examines how well developers can work with a technical design. It focuses on a part of the system that can still be revised, between the architecture overview and the detailed specification. |
Complexitydifferent | High | Medium | Medium | Medium |
Timedifferent | 2-6 h | 30-90 min | Ongoing | 2–4 h review as a planning range; preparation and evaluation additional |
Participantsdifferent | 1-6 | 3-12 | 2-20 | Designers, developers as users, and facilitation |
Formatsame | Workshop + async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Stock and Flow Model, Dynamics Notes, Simulation Hypotheses | Postmortem Doc, Action Items, Timeline | Chat Transcript, Action Log, Automations | Prioritized development tasks, Jointly produced code or pseudocode, Observed difficulties and open design questions, Proposed design revisions |
Tagsno overlap | DynamicsSimulationFeedbackSystems thinking | Site Reliability EngineeringIncidentLearningReliability | CollaborationEngineeringIncident | ArchitectureEngineeringFeedbackValidationTasks |