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| Criterion |  Systems Thinking Future Reality Tree |  Decision Making Wideband Delphi |  Agile NoEstimates |
|---|---|---|---|
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. | A single opinion rarely holds up for planning when the future is genuinely uncertain. It separates options, evaluation criteria, and open risks. The result is captured as an Estimate Range, Assumption Log, and Expert Consensus Notes. | When estimating slows a team down more than it helps, it shifts the focus to flow, small slices, and real lead time. It sorts work by value, risk, and delivery ability. The result is captured as Throughput Data, Flow Forecast, and Slicing Rules. |
Complexitydifferent | High | High | Medium |
Timedifferent | 2-4 h | 1-4 h or multiple rounds | laufend |
Participantsdifferent | 3-8 | 4-12 Experten | 2-12 |
Formatdifferent | Workshop | Workshop + async | Workshop + async |
Outputdifferent | Future Reality Tree, Negative Branches, Assumption List, Improved Injections | Estimate Range, Assumption Log, Expert Consensus Notes | Throughput Data, Flow Forecast, Slicing Rules |
Tagsno overlap | Theory of ConstraintsSystems thinkingChange | EstimationExpertsForecasting | EstimationForecastingFlow |
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