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| Criterion |  Systems Thinking Future Reality Tree |  Systems Thinking Evaporating Cloud |  DevOps Blameless Postmortem |  DevOps Incident Timeline Analysis |
|---|---|---|---|---|
Purposedifferent | 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. | The method makes visible why two seemingly incompatible demands arise and which assumption must be tested to resolve the conflict. | 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 an incident with an unclear sequence, the method makes the timeline precisely visible. It separates perception, reaction, and delay so cause and effect become more clearly readable. |
Complexitydifferent | High | Medium | Medium | Medium |
Timedifferent | 2-4 h | 60-120 min | 30-90 min | 60-180 min |
Participantsdifferent | 3-8 | 2-8 | 3-12 | 3-10 |
Formatdifferent | Workshop | Workshop | Workshop + async | Workshop + async |
Outputdifferent | Future Reality Tree, Negative Branches, Assumption List, Improved Injections | Conflict Cloud, Assumption List, Breakthrough Ideas, Next Experiments | Postmortem Doc, Action Items, Timeline | Incident Timeline, Evidence Log, Delay Analysis, Improvement Actions |
Tagsno overlap | Theory of ConstraintsSystems thinkingChange | Theory of ConstraintsAssumptionsSystems thinking | Site Reliability EngineeringIncidentLearningReliability | IncidentTimelineSite Reliability Engineering |