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| Criterion |  Operations 8D Problem Solving |  Operations Kepner-Tregoe |  Product Discovery Riskiest Assumption Test |
|---|---|---|---|
Purposedifferent | For an acute quality or delivery problem, the method structures immediate protection and root cause work together. It keeps the situation stable while the actual cause is investigated cleanly. | 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 idea hinges on one critical unknown, it prioritizes testing that exact piece of uncertainty first. It separates problem, assumption, solution, and evidence. The result is captured as a prioritized list of assumptions, a test plan, and a result report. |
Complexitydifferent | High | High | Medium |
Timedifferent | 1-6 Wochen | 2-8 h | 1-2 Wochen pro Iteration |
Participantsdifferent | 4-10 | 2-8 | 2-6 |
Formatsame | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan | Problem Analysis, Decision Analysis, Risk Plan | Prioritized Assumption List, Test Plan, Results Report |
Tagsno overlap | QualityProblem solvingRoot cause | Problem solvingRoot causeDecisionOperations | ExperimentsValidationDiscoveryAssumptions |
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Methods with strong topical overlap with the current selection, not yet in the comparison.
