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| Criterion |  Operations Ivy Lee Method |  Operations ALPEN Method |  Agile Affinity Estimation |
|---|---|---|---|
Purposedifferent | With a restless workday full of too many open items, the method creates radical simplicity. It directs attention to a short sequence instead of a broad, still-open field. | With an overloaded day full of too many tasks, a realistic picture of the day emerges. The method connects estimating, deciding, and buffer thinking so planning fits available energy and time. | 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. |
Complexitydifferent | Low | Low | Medium |
Timedifferent | 5-10 min daily | 10-20 min daily | 30-90 min |
Participantsdifferent | 1 | 1 | 3-12 |
Formatdifferent | Async | Async | Workshop |
Outputdifferent | Daily Priority List, Completion Notes | Daily Plan, Time Estimates, Review Notes | Affinity Size Map, Grouped Estimates, Unclear Items |
Tagsno overlap | PrioritizationProductivityExecution | PlanningTime managementProductivityOperations | EstimationBacklogRelative sizing |
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