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| Criterion |  Systems Thinking Evaporating Cloud |  Operations Root Cause Tree Analysis |  Systems Thinking Future Reality Tree |  Operations 5 Whys |
|---|---|---|---|---|
Purposedifferent | The method makes visible why two seemingly incompatible demands arise and which assumption must be tested to resolve the conflict. | 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. | For a single, hard-to-explain deviation, the method exposes the causal chain behind the visible symptom. It keeps the cause open until a controllable condition emerges instead of a mere description. |
Complexitydifferent | Medium | Medium | High | Low |
Timedifferent | 60-120 min | 1-3 h | 2-4 h | 15-30 min |
Participantsdifferent | 2-8 | 2-8 | 3-8 | 2-6 |
Formatsame | Workshop | Workshop | Workshop | Workshop |
Outputdifferent | Conflict Cloud, Assumption List, Breakthrough Ideas, Next Experiments | Cause Tree, Evidence Notes, Countermeasures | Future Reality Tree, Negative Branches, Assumption List, Improved Injections | Root cause notes, Countermeasures |
Tagsno overlap | Theory of ConstraintsAssumptionsSystems thinking | Root causeTreeIncidentQuality | Theory of ConstraintsSystems thinkingChange | Root causeIncidentLeanProblem solving |