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| Criterion |  Innovation Contradiction Analysis |  Operations A3 Problem Solving |  UX Research First-click Testing |  Operations Gemba Walk |
|---|---|---|---|---|
Purposedifferent | 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. | 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 users immediately turn the wrong way on a screen or wireframe, first click testing checks initial orientation at high speed. The first click shows early whether expectation, labeling, and wayfinding fit together. | 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. |
Complexitydifferent | Medium | Medium | Low | Low |
Timedifferent | 60-120 min | 45-90 min | 1-2 Tage | 30-120 min |
Participantsdifferent | 2-8 | 2-5 | 10-30 | 2-6 |
Formatdifferent | Workshop | Workshop + async | Async | Workshop |
Outputdifferent | Contradiction Statement, Abstraction Notes, Solution Principles, Concept Ideas | A3 Report, Action Plan, Root Cause Analysis | Click Heatmap, Success Rate, Design Recommendations | Observation Notes, Improvement Ideas |
Tagsno overlap | ContradictionsInnovationProblem solving | LeanProblem solvingCoachingOperations | UXNavigationFindabilityValidation | LeanObservationProcessOperations |