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| Criterion |  DevOps Blameless Postmortem |  Systems Thinking Future Reality Tree |  Agile Start Stop Continue |  Agile Mad Sad Glad |
|---|---|---|---|---|
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. | A Future Reality Tree shows how desired actions are meant to lead to a better system state. The method checks whether a path of change holds together logically before time flows into implementation. | When a team wants to deliberately adjust its working behavior, it makes habits visible and assessable. It focuses on concrete changes instead of diffuse mood. | When a team's or workshop's mood needs to become readable, it structures emotional signals with little setup. It makes strain, relief, and sources of energy tangible. |
Complexitydifferent | Medium | High | Low | Low |
Timedifferent | 30-90 min | 2-4 h | 30-60 min | 30-60 min |
Participantsdifferent | 3-12 | 3-8 | 3-12 | 3-10 |
Formatdifferent | Workshop + async | Workshop | Workshop | Workshop |
Outputdifferent | Postmortem Doc, Action Items, Timeline | Future Reality Tree, Negative Branches, Assumption List, Improved Injections | Start Stop Continue Board, Improvement Actions | Emotion Board, Themes, Action Items |
Tagsno overlap | Site Reliability EngineeringIncidentLearningReliability | Theory of ConstraintsSystems thinkingChange | RetrospectiveImprovementTeamReflection | RetrospectiveTeamReflection |