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Selected:Assumption Surfacing8D Problem SolvingLASR (Lightweight Approach for Software Reviews)5 Whys
| Criterion |  Decision Making Assumption Surfacing |  Operations 8D Problem Solving |  Architecture LASR (Lightweight Approach for Software Reviews) |  Operations 5 Whys |
|---|---|---|---|---|
Purposedifferent | 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 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. | LASR helps development teams identify where their software falls short of important quality goals and which improvements to consider. A small group with existing system knowledge can make an initial assessment and investigate open questions in more detail. | 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 | Low | High | Medium | Low |
Timedifferent | 45-90 min | 1-6 Wochen | 3–4 h for initial assessment; preparation and deeper analysis additional | 15-30 min |
Participantsdifferent | 2-8 | 4-10 | 1 or a small team; particularly suitable for 3–4 people | 2-6 |
Formatdifferent | Workshop + async | Workshop + async | Workshop + async | Workshop |
Outputdifferent | Assumption List, Critical Assumptions, Learning Plan | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan | Lean Mission Statement describing the software’s purpose, Prioritized quality goals and evaluation criteria, Risks and estimated gaps against quality goals, More closely examined findings and open checks | Root cause notes, Countermeasures |
Tagsno overlap | AssumptionsRiskDecisionDiscovery | QualityProblem solvingRoot cause | ArchitectureQualityRiskAssessmentLean | Root causeIncidentLeanProblem solving |