View methods side by side.
Choose up to four methods. Add them using the search and share the comparison by copying its link.
Selected:8D Problem SolvingAssumption MappingFailure Mode and Effects AnalysisRiskiest Assumption Test
| Criterion |  Operations 8D Problem Solving |  Product Discovery Assumption Mapping |  Operations Failure Mode and Effects Analysis |  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. | When assumptions still sit unordered in the room, it weighs uncertainty against leverage. It makes visible which hypotheses should be checked first. | For a process, product, or service with noticeable failure risks, the method assesses possible failure modes in advance. It directs attention to combinations of occurrence, effect, and detectability. | 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 | Medium | High | Medium |
Timedifferent | 1-6 Wochen | 45-60 min | 2-6 h | 1-2 Wochen pro Iteration |
Participantsdifferent | 4-10 | 2-8 | 3-10 | 2-6 |
Formatdifferent | Workshop + async | Workshop + async | Workshop | Workshop + async |
Outputdifferent | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan | Assumption map, Test backlog, Risk ranking | FMEA Table, Risk Priority, Mitigation Actions | Prioritized Assumption List, Test Plan, Results Report |
Tagsno overlap | QualityProblem solvingRoot cause | AssumptionsRiskExperimentsValidation | RiskQualityOperationsRoot cause | ExperimentsValidationDiscoveryAssumptions |