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| Criterion |  Agile Bucket System |  Agile Affinity Estimation |  Knowledge Modeling IBIS |  Decision Making Assumption Surfacing |
|---|---|---|---|---|
Purposedifferent | When a large batch of work needs a fast, rough estimate, it sorts items into predefined size buckets. It sorts work by value, risk, and delivery ability. The result is captured as a Bucketed Backlog, Relative Estimates, and Split Candidates. | 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. | IBIS structures thinking about complex questions as a sequence of issues, ideas, and arguments. The method keeps discussions open without forcing them into premature consensus. | Plans often contain assumptions that were never openly stated and remain dangerous precisely because of that. Assumption Surfacing makes these silent premises visible and prioritizes which of them carry the initiative or could sink it. |
Complexitydifferent | Medium | Medium | Medium | Low |
Timedifferent | 30-90 min | 30-90 min | 1-3 h | 45-90 min |
Participantsdifferent | 3-12 | 3-12 | 2-8 | 2-8 |
Formatdifferent | Workshop | Workshop | Workshop + async | Workshop + async |
Outputdifferent | Bucketed Backlog, Relative Estimates, Split Candidates | Affinity Size Map, Grouped Estimates, Unclear Items | Issue Map, Positions, Argument Notes | Assumption List, Critical Assumptions, Learning Plan |
Tagsno overlap | EstimationBacklogRelative sizing | EstimationBacklogRelative sizing | RationaleKnowledgeDecision | AssumptionsRiskDecisionDiscovery |