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| Criterion |  Decision Making Three-Point Estimation |  Operations Getting Things Done |  Operations Ivy Lee Method |
|---|---|---|---|
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. | With many open commitments and ideas in daily life, a reliable external storage system emerges. The method relieves the mind so priority and context don't have to compete in memory. | 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. |
Complexitydifferent | Medium | Medium | Low |
Timedifferent | 10-30 min je Item | 1-2 h Setup, laufend | 5-10 min daily |
Participantsdifferent | 1-8 | 1 | 1 |
Formatdifferent | Workshop + async | Async | Async |
Outputdifferent | Three-Point Estimate, Risk Range, Assumption Notes | Action Lists, Project List, Review Routine | Daily Priority List, Completion Notes |
Tagsno overlap | EstimationUncertaintyForecasting | ProductivityPlanningTasksExecution | PrioritizationProductivityExecution |
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