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| Criterion |  Operations Kepner-Tregoe |  Operations Getting Things Done |  Decision Making Pre-Mortem |  Operations ALPEN Method |
|---|---|---|---|---|
Purposedifferent | For a disturbance that's hard to pin down, the method cleanly separates problem, cause, and decision. It reduces mixing when symptoms allow several interpretations. | 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. | In early initiatives with many uncertainties, planning quickly turns too optimistic. A pre-mortem makes the expected failure visible in advance and sharpens the view of causes, gaps, and countermeasures. | 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. |
Complexitydifferent | High | Medium | Low | Low |
Timedifferent | 2-8 h | 1-2 h Setup, laufend | 20–45 min | 10-20 min daily |
Participantsdifferent | 2-8 | 1 | Small cross-functional group | 1 |
Formatdifferent | Workshop + async | Async | Workshop | Async |
Outputdifferent | Problem Analysis, Decision Analysis, Risk Plan | Action Lists, Project List, Review Routine | Risk list, Mitigation plan, Assumption log | Daily Plan, Time Estimates, Review Notes |
Tagsno overlap | Problem solvingRoot causeDecisionOperations | ProductivityPlanningTasksExecution | RiskDecisionFailurePlanning | PlanningTime managementProductivityOperations |