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| Criterion |  Systems Thinking Future Reality Tree |  Operations Kaizen Event |  Decision Making Delphi Method |  Operations A3 Problem Solving |
|---|---|---|---|---|
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. | For a tightly scoped process segment with noticeable waste, the method bundles shared energy for change. It suits situations that call for fast learning loops and visible adjustments. | When knowledge is distributed and direct dominance should be avoided, groups quickly fall under the sway of their opinion leaders. The Delphi Method gathers assessments iteratively and gradually brings expert judgments closer together. | For a complex deviation with several people involved, the method bundles problem, analysis, and decision onto one page. It creates a shared working space where causes, countermeasures, and follow-up fit together. |
Complexitydifferent | High | Medium | High | Medium |
Timedifferent | 2-4 h | 0.5-5 Tage | 1-4 Wochen | 45-90 min |
Participantsdifferent | 3-8 | 4-10 | 6-30 Experten | 2-5 |
Formatdifferent | Workshop | Workshop | Async | Workshop + async |
Outputdifferent | Future Reality Tree, Negative Branches, Assumption List, Improved Injections | Kaizen Charter, Waste List, Improvement Experiments, Standard Work Update | Expert Forecast, Consensus Range, Assumption Notes | A3 Report, Action Plan, Root Cause Analysis |
Tagsno overlap | Theory of ConstraintsSystems thinkingChange | LeanContinuous improvementOperations | ForecastingExpertsDecisionStrategy | LeanProblem solvingCoachingOperations |