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| Criterion |  Decision Making Three-Point Estimation |  Engineering Kanban |  Systems Thinking Future Reality Tree |
|---|---|---|---|
Purposedifferent | A single estimate for effort, time, or risk often looks too smooth for the real uncertainty behind it. It separates options, evaluation criteria, and open risks. The result is captured as a Three-Point Estimate, Risk Range, and Assumption Notes. | When work sits in too many parallel streams, throughput suffers and no one sees the bottlenecks. Kanban makes the flow of work visible and limits overload so a system becomes calmer and more predictable. | 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. |
Complexitydifferent | Medium | Medium | High |
Timedifferent | 10-30 min je Item | Ongoing | 2-4 h |
Participantsdifferent | 1-8 | 2-12 | 3-8 |
Formatdifferent | Workshop + async | Workshop + async | Workshop |
Outputdifferent | Three-Point Estimate, Risk Range, Assumption Notes | Kanban board, WIP policies, Flow metrics | Future Reality Tree, Negative Branches, Assumption List, Improved Injections |
Tagsno overlap | EstimationUncertaintyForecasting | FlowVisual managementDelivery | Theory of ConstraintsSystems thinkingChange |
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