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| Criterion |  Agile Ideal Days |  Agile Affinity Estimation |  Systems Thinking Future Reality Tree |
|---|---|---|---|
Purposedifferent | When effort needs to be thought of as real working time, it offers a simple common denominator for comparison. It sorts work by value, risk, and delivery ability. The result is captured as Ideal Day Estimates, Assumption Notes, and Capacity Caveats. | When many tasks need to be classified quickly, it sorts them by perceived effort and similarity. It reduces the effort of fine-grained estimation for large volumes. | 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 | Low | Medium | High |
Timedifferent | 15-60 min | 30-90 min | 2-4 h |
Participantsdifferent | 2-9 | 3-12 | 3-8 |
Formatdifferent | Workshop + async | Workshop | Workshop |
Outputdifferent | Ideal Day Estimates, Assumption Notes, Capacity Caveats | Affinity Size Map, Grouped Estimates, Unclear Items | Future Reality Tree, Negative Branches, Assumption List, Improved Injections |
Tagsno overlap | EstimationEffortAgile | EstimationBacklogRelative sizing | Theory of ConstraintsSystems thinkingChange |
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Methods with strong topical overlap with the current selection, not yet in the comparison.
