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 |  Engineering Hypothesis-Driven Troubleshooting |  Operations ALPEN Method |  Operations 8D Problem Solving |
|---|---|---|---|---|
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. | When systems fail unexpectedly, spontaneous attempts often produce more noise than insight. Hypothesis-driven Troubleshooting translates symptoms into testable assumptions and makes troubleshooting learnable. | With an overloaded day full of too many tasks, a realistic picture of the day emerges. The method connects estimating, deciding, and buffer thinking so planning fits available energy and time. | For an acute quality or delivery problem, the method structures immediate protection and root cause work together. It keeps the situation stable while the actual cause is investigated cleanly. |
Complexitydifferent | Low | Medium | Low | High |
Timedifferent | 15-30 min | 30-240 min | 10-20 min daily | 1-6 Wochen |
Participantsdifferent | 2-6 | 1-6 | 1 | 4-10 |
Formatdifferent | Workshop | Workshop + async | Async | Workshop + async |
Outputdifferent | Root cause notes, Countermeasures | Hypothesis Log, Test Plan, Evidence Notes, Diagnosis Summary | Daily Plan, Time Estimates, Review Notes | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan |
Tagsno overlap | Root causeIncidentLeanProblem solving | TroubleshootingProblem solvingDiagnosis | PlanningTime managementProductivityOperations | QualityProblem solvingRoot cause |