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| Criterion |  Operations Time Blocking |  Decision Making PERT Estimation |  Operations Eat the Frog |  Operations Ivy Lee Method |
|---|---|---|---|---|
Purposedifferent | With a calendar that grows on request, the method makes available time explicit again. It combines appointments, focus work, and buffer into a more realistic day structure. | On complex initiatives, a plain average tends to understate just how uncertain the outcome really is. It separates options, evaluation criteria, and open risks. The result is captured as a PERT Estimate, Expected Value, and Risk Notes. | The method protects energy and attention for the task that creates the largest progress and is often postponed. | 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 | Low | Medium | Low | Low |
Timedifferent | 15-30 min Planung, laufend | 15-45 min | 15-90 min daily | 5-10 min daily |
Participantsdifferent | 1 | 1-8 | 1 | 1 |
Formatdifferent | Async | Workshop + async | Async | Async |
Outputdifferent | Blocked Calendar, Capacity View, Focus Plan | PERT Estimate, Expected Value, Risk Notes | Priority Task, Completion Note, Daily Focus | Daily Priority List, Completion Notes |
Tagsno overlap | PlanningTime managementFocus | EstimationUncertaintyRisk | PrioritizationProductivityFocusExecution | PrioritizationProductivityExecution |