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| Criterion |  Delivery Cost of Delay |  Operations Barrier Analysis |  Decision Making Assumption Surfacing |  Operations 5 Whys |
|---|---|---|---|---|
Purposedifferent | Helps clarify scope, order, and delivery flow in concrete terms. It makes work, constraints, and sequence manageable. The result is captured as a Cost of Delay table and prioritization sequence. | For a risk that can only be managed through multiple layers of protection, the method examines the effectiveness of each barrier. It shows where safeguards are missing, too weak, or fail under real conditions. | 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 single, hard-to-explain deviation, the method exposes the causal chain behind the visible symptom. It keeps the cause open until a controllable condition emerges instead of a mere description. |
Complexitydifferent | High | Medium | Low | Low |
Timedifferent | 90-180 min | 2-4 h | 45-90 min | 15-30 min |
Participantsdifferent | 3-8 | 2-6 | 2-8 | 2-6 |
Formatdifferent | Workshop | Workshop + async | Workshop + async | Workshop |
Outputdifferent | CoD Table, Prioritization Sequence | Barrier Inventory, Failure Analysis per Barrier, Action Backlog | Assumption List, Critical Assumptions, Learning Plan | Root cause notes, Countermeasures |
Tagsno overlap | PrioritizationDeliveryEconomicsDecision | Root causeSafetyIncident | AssumptionsRiskDecisionDiscovery | Root causeIncidentLeanProblem solving |