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| Criterion |  Innovation TRIZ |  Engineering Fault Isolation |  Operations Gemba Walk |  Engineering Hypothesis-Driven Troubleshooting |
|---|---|---|---|---|
Purposedifferent | 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. | In technical failures, the visible symptom often gets mixed up with the actual cause. Fault Isolation narrows the fault space and progressively reduces which part of the system is truly affected. | 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. | When systems fail unexpectedly, spontaneous attempts often produce more noise than insight. Hypothesis-driven Troubleshooting translates symptoms into testable assumptions and makes troubleshooting learnable. |
Complexitydifferent | High | Medium | Low | Medium |
Timedifferent | 1-4 h | 30-180 min | 30-120 min | 30-240 min |
Participantsdifferent | 2-8 | 1-6 | 2-6 | 1-6 |
Formatdifferent | Workshop + async | Workshop + async | Workshop | Workshop + async |
Outputdifferent | Contradiction Statement, Inventive Principles, Solution Concepts | Fault Isolation Map, Test Log, Excluded Hypotheses, Narrowed Fault Area | Observation Notes, Improvement Ideas | Hypothesis Log, Test Plan, Evidence Notes, Diagnosis Summary |
Tagsno overlap | InnovationProblem solvingContradictionsCreativity | TroubleshootingDiagnosisEngineering | LeanObservationProcessOperations | TroubleshootingProblem solvingDiagnosis |