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| Criterion |  Engineering Failure Scenario Analysis |  Systems Thinking Future Reality Tree |  Operations Change Analysis |  Systems Thinking Evaporating Cloud |
|---|---|---|---|---|
Purposedifferent | In critical processes, it is not enough to plan only for the normal case. Failure Scenario Analysis looks at the path into failure and shows which failures, chains, and control gaps cause the most damage. | 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 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. | The method makes visible why two seemingly incompatible demands arise and which assumption must be tested to resolve the conflict. |
Complexitydifferent | Medium | High | Medium | Medium |
Timedifferent | 1-3 h | 2-4 h | 45-120 min | 60-120 min |
Participantsdifferent | 3-8 | 3-8 | 2-6 | 2-8 |
Formatdifferent | Workshop | Workshop | Workshop + async | Workshop |
Outputdifferent | Failure Scenarios, Risk Notes, Control Gaps, Test and Response Actions | Future Reality Tree, Negative Branches, Assumption List, Improved Injections | Change Matrix, Cause Hypotheses, Validation Questions, Action List | Conflict Cloud, Assumption List, Breakthrough Ideas, Next Experiments |
Tagsno overlap | FailureResilienceRisk | Theory of ConstraintsSystems thinkingChange | ChangeRoot causeTroubleshootingComparison | Theory of ConstraintsAssumptionsSystems thinking |