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| Criterion |  Operations Gemba Walk |  Operations ALPEN Method |  Operations Kepner-Tregoe |  Decision Making Constraint Analysis |
|---|---|---|---|---|
Purposedifferent | When there is uncertainty about the real course of a process, the method brings observation to the place where work happens. It combines perception, follow-up questions, and process knowledge so decisions rest on actual workflows instead of assumptions. | 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. | 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. | When an initiative stalls, the limit often lies not in the idea but in hard or soft boundary conditions. Constraint Analysis separates these limits and shows which of them can actually be shaped. |
Complexitydifferent | Low | Low | High | Low |
Timedifferent | 30-120 min | 10-20 min daily | 2-8 h | 30-90 min |
Participantsdifferent | 2-6 | 1 | 2-8 | 2-8 |
Formatdifferent | Workshop | Async | Workshop + async | Workshop + async |
Outputdifferent | Observation Notes, Improvement Ideas | Daily Plan, Time Estimates, Review Notes | Problem Analysis, Decision Analysis, Risk Plan | Constraint List, Hard/Soft Classification, Option Impact Notes, Decision Boundaries |
Tagsno overlap | LeanObservationProcessOperations | PlanningTime managementProductivityOperations | Problem solvingRoot causeDecisionOperations | ConstraintsDecisionPlanningOptions |