View methods side by side.
Choose up to four methods. Add them using the search and share the comparison by copying its link.
| Criterion |  Operations 5 Whys |  Operations A3 Problem Solving |  Decision Making RAPID |  Decision Making DACI |
|---|---|---|---|---|
Purposedifferent | 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. | 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. | In complex management decisions, clarity is often missing about who recommends, who agrees, and who makes the decision. RAPID creates this assignment and stabilizes decisions across several levels. | In cross-functional decisions, responsibilities quickly blur between approval, influence, and execution. DACI arranges these roles so decision pressure, contribution, and information stay cleanly separated. |
Complexitydifferent | Low | Medium | Medium | Low |
Timedifferent | 15-30 min | 45-90 min | 45-90 min | 30-60 min |
Participantsdifferent | 2-6 | 2-5 | 3-12 | 2-10 |
Formatdifferent | Workshop | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Root cause notes, Countermeasures | A3 Report, Action Plan, Root Cause Analysis | RAPID Role Map, Recommendation, Decision Log | DACI Matrix, Decision Owner, Decision Log |
Tagsno overlap | Root causeIncidentLeanProblem solving | LeanProblem solvingCoachingOperations | DecisionRolesGovernance | DecisionRolesGovernanceAlignment |