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| Criterion |  DevOps Blameless Postmortem |  Product Strategy DIBB |  Decision Making Assumption Surfacing |  Decision Making Delphi Method |
|---|---|---|---|---|
Purposedifferent | After an incident with damage or a near miss, the method creates a sober field for learning without assigning blame. It directs attention to the course of events, conditions, and effective countermeasures. | 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. | 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 knowledge is distributed and direct dominance should be avoided, groups quickly fall under the sway of their opinion leaders. The Delphi Method gathers assessments iteratively and gradually brings expert judgments closer together. |
Complexitydifferent | Medium | Low | Low | High |
Timedifferent | 30-90 min | 1-2 h | 45-90 min | 1-4 Wochen |
Participantsdifferent | 3-12 | 2-8 | 2-8 | 6-30 Experten |
Formatdifferent | Workshop + async | Workshop + async | Workshop + async | Async |
Outputdifferent | Postmortem Doc, Action Items, Timeline | DIBB document, Belief list, Bet list, Learning report | Assumption List, Critical Assumptions, Learning Plan | Expert Forecast, Consensus Range, Assumption Notes |
Tagsno overlap | Site Reliability EngineeringIncidentLearningReliability | StrategyDecisionAssumptionsHypothesis | AssumptionsRiskDecisionDiscovery | ForecastingExpertsDecisionStrategy |