View methods side by side.
Choose up to four methods. Add them using the search and share the comparison by copying its link.
| Criterion |  Product Discovery Smoke Test |  Operations 5 Whys |  Operations 8D Problem Solving |
|---|---|---|---|
Purposedifferent | When demand only needs to be roughly verified, it tests interest with minimal effort. It measures whether people would take a next step at all. | 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 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 | Low | High |
Timedifferent | 1-5 Tage | 15-30 min | 1-6 Wochen |
Participantsdifferent | Nutzertraffic | 2-6 | 4-10 |
Formatdifferent | Async | Workshop | Workshop + async |
Outputdifferent | Interest Metrics, Conversion Signal, Learning Note | Root cause notes, Countermeasures | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan |
Tagsno overlap | ValidationExperimentsDemandGrowth | Root causeIncidentLeanProblem solving | QualityProblem solvingRoot cause |
Often compared together
Methods with strong topical overlap with the current selection, not yet in the comparison.
