View methods side by side.
Choose up to four methods. Add them using the search and share the comparison by copying its link.
| Criterion |  Engineering Fault Isolation |  Decision Making Assumption Surfacing |  Decision Making Risk Matrix |  Product Strategy DIBB |
|---|---|---|---|---|
Purposedifferent | 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. | 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. | When a project faces many possible disruptions, it quickly becomes unclear which risks deserve attention first. It separates options, evaluation criteria, and open risks. The result is captured as a Risk Matrix and a Top Risk List. | DIBB helps clarify target groups, value, goals, and priorities by making the logic behind a decision explicit. It captures results as a DIBB document, belief list, bet list, and learning report. |
Complexitydifferent | Medium | Low | Low | Low |
Timedifferent | 30-180 min | 45-90 min | 30-60 min | 1-2 h |
Participantsdifferent | 1-6 | 2-8 | 3-10 | 2-8 |
Formatsame | Workshop + async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Fault Isolation Map, Test Log, Excluded Hypotheses, Narrowed Fault Area | Assumption List, Critical Assumptions, Learning Plan | Risk Matrix, Top Risk List | DIBB document, Belief list, Bet list, Learning report |
Tagsno overlap | TroubleshootingDiagnosisEngineering | AssumptionsRiskDecisionDiscovery | RiskDecisionPrioritizationAssessment | StrategyDecisionAssumptionsHypothesis |