View methods side by side.
Choose up to four methods. Add them using the search and share the comparison by copying its link.
| Criterion |  Decision Making Assumption Surfacing |  Operations A3 Problem Solving |  Product Discovery Riskiest Assumption Test |  Operations Kepner-Tregoe |
|---|---|---|---|---|
Purposedifferent | Plans often contain assumptions that were never openly stated and remain dangerous precisely because of that. Assumption Surfacing makes these silent premises visible and prioritizes which of them carry the initiative or could sink it. | 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 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. | 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. |
Complexitydifferent | Low | Medium | Medium | High |
Timedifferent | 45-90 min | 45-90 min | 1-2 Wochen pro Iteration | 2-8 h |
Participantsdifferent | 2-8 | 2-5 | 2-6 | 2-8 |
Formatsame | Workshop + async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Assumption List, Critical Assumptions, Learning Plan | A3 Report, Action Plan, Root Cause Analysis | Prioritized Assumption List, Test Plan, Results Report | Problem Analysis, Decision Analysis, Risk Plan |
Tagsno overlap | AssumptionsRiskDecisionDiscovery | LeanProblem solvingCoachingOperations | ExperimentsValidationDiscoveryAssumptions | Problem solvingRoot causeDecisionOperations |