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| Criterion |  Systems Thinking Evaporating Cloud |  Operations Fishbone Diagram |  Operations Failure Mode and Effects Analysis |  Systems Thinking Current Reality Tree |
|---|---|---|---|---|
Purposedifferent | The method makes visible why two seemingly incompatible demands arise and which assumption must be tested to resolve the conflict. | When a problem has several possible contributing factors, the method sorts causes by cause areas. It prevents an initial hunch from blocking the view of other plausible drivers. | For a process, product, or service with noticeable failure risks, the method assesses possible failure modes in advance. It directs attention to combinations of occurrence, effect, and detectability. | A Current Reality Tree condenses many symptoms into a few causal chains. The method makes visible which core problems drive several negative effects at once. |
Complexitydifferent | Medium | Low | High | High |
Timedifferent | 60-120 min | 30-60 min | 2-6 h | 2-6 h |
Participantsdifferent | 2-8 | 2-8 | 3-10 | 3-8 |
Formatsame | Workshop | Workshop | Workshop | Workshop |
Outputdifferent | Conflict Cloud, Assumption List, Breakthrough Ideas, Next Experiments | Fishbone Diagram, Cause Categories, Investigation Backlog | FMEA Table, Risk Priority, Mitigation Actions | Current Reality Tree, Core Problems, Intervention Ideas |
Tagsno overlap | Theory of ConstraintsAssumptionsSystems thinking | Root causeQualityOperations | RiskQualityOperationsRoot cause | Systems thinkingRoot causeConstraintsCausality |