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| Criterion |  Systems Thinking Future Reality Tree |  Systems Thinking Futures Wheel |  Operations 5 Whys |
|---|---|---|---|
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 Futures Wheel helps explore the consequences of a decision, a trend, or a strategic move in a structured way. It makes visible which first, second, and third-order effects could arise from an event. | 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 | High | Medium | Low |
Timedifferent | 2-4 h | 60-120 min | 15-30 min |
Participantsdifferent | 3-8 | 3-10 | 2-6 |
Formatdifferent | Workshop | Workshop + async | Workshop |
Outputdifferent | Future Reality Tree, Negative Branches, Assumption List, Improved Injections | Futures Wheel, Consequence Chains, Strategic Signals | Root cause notes, Countermeasures |
Tagsno overlap | Theory of ConstraintsSystems thinkingChange | ForesightSystems thinkingSignals | Root causeIncidentLeanProblem solving |
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