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| Criterion |  Operations Change Analysis |  Operations Root Cause Tree Analysis |  Systems Thinking Future Reality Tree |
|---|---|---|---|
Purposedifferent | For a deviation after a change, the method isolates the influence of the altered condition. It narrows down which differences are relevant and which are just accompanying noise. | For a problem with several suspected causes, the method builds a causal structure instead of a mere list. It makes visible how causes connect and where the strongest points of leverage lie. | 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. |
Complexitydifferent | Medium | Medium | High |
Timedifferent | 45-120 min | 1-3 h | 2-4 h |
Participantsdifferent | 2-6 | 2-8 | 3-8 |
Formatdifferent | Workshop + async | Workshop | Workshop |
Outputdifferent | Change Matrix, Cause Hypotheses, Validation Questions, Action List | Cause Tree, Evidence Notes, Countermeasures | Future Reality Tree, Negative Branches, Assumption List, Improved Injections |
Tagsno overlap | ChangeRoot causeTroubleshootingComparison | Root causeTreeIncidentQuality | Theory of ConstraintsSystems thinkingChange |
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