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| Criterion |  Operations A3 Problem Solving |  Innovation Contradiction Analysis |  Operations Gemba Walk |  Innovation TRIZ |
|---|---|---|---|---|
Purposedifferent | 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 a system should improve while another measure suffers as a result, the method makes the underlying conflict precisely formulable. It separates the desired effect from its side effect. This makes solutions possible that address the contradiction deliberately instead of half-heartedly. | 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 technical contradictions or trade-offs, the method looks for solutions that resolve opposing requirements at the same time. It translates limits into an explicit picture of conflict that becomes workable. This produces not just compromises but more elegant principles. |
Complexitydifferent | Medium | Medium | Low | High |
Timedifferent | 45-90 min | 60-120 min | 30-120 min | 1-4 h |
Participantsdifferent | 2-5 | 2-8 | 2-6 | 2-8 |
Formatdifferent | Workshop + async | Workshop | Workshop | Workshop + async |
Outputdifferent | A3 Report, Action Plan, Root Cause Analysis | Contradiction Statement, Abstraction Notes, Solution Principles, Concept Ideas | Observation Notes, Improvement Ideas | Contradiction Statement, Inventive Principles, Solution Concepts |
Tagsno overlap | LeanProblem solvingCoachingOperations | ContradictionsInnovationProblem solving | LeanObservationProcessOperations | InnovationProblem solvingContradictionsCreativity |