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 A3 Problem Solving |  Operations Kaizen Event |  Decision Making Delphi Method |  Operations 5 Whys |
|---|---|---|---|---|
Purposedifferent | 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. | For a tightly scoped process segment with noticeable waste, the method bundles shared energy for change. It suits situations that call for fast learning loops and visible adjustments. | 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. | 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 | Medium | Medium | High | Low |
Timedifferent | 45-90 min | 0.5-5 Tage | 1-4 Wochen | 15-30 min |
Participantsdifferent | 2-5 | 4-10 | 6-30 Experten | 2-6 |
Formatdifferent | Workshop + async | Workshop | Async | Workshop |
Outputdifferent | A3 Report, Action Plan, Root Cause Analysis | Kaizen Charter, Waste List, Improvement Experiments, Standard Work Update | Expert Forecast, Consensus Range, Assumption Notes | Root cause notes, Countermeasures |
Tagsno overlap | LeanProblem solvingCoachingOperations | LeanContinuous improvementOperations | ForecastingExpertsDecisionStrategy | Root causeIncidentLeanProblem solving |