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| Criterion |  Operations Gemba Walk |  Decision Making Decision Tree |  Operations A3 Problem Solving |  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. | For decisions with follow-on paths and dependencies, a linear comparison is often not enough. A Decision Tree shows how options branch under conditions and which consequences hang on each branch. | For a complex deviation with several people involved, the method bundles problem, analysis, and decision onto one page. It creates a shared working space where causes, countermeasures, and follow-up fit together. | 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 | Medium | Medium | Low |
Timedifferent | 30-120 min | 30-90 min | 45-90 min | 30-90 min |
Participantsdifferent | 2-6 | 1-6 | 2-5 | 2-8 |
Formatdifferent | Workshop | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Observation Notes, Improvement Ideas | Decision Tree, Option Map, Assumption List | A3 Report, Action Plan, Root Cause Analysis | Constraint List, Hard/Soft Classification, Option Impact Notes, Decision Boundaries |
Tagsno overlap | LeanObservationProcessOperations | DecisionTreeOptions | LeanProblem solvingCoachingOperations | ConstraintsDecisionPlanningOptions |