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| Criterion |  Product Strategy Lean Canvas |  Operations A3 Problem Solving |  Decision Making Assumption Surfacing |  Operations 5 Whys |
|---|---|---|---|---|
Purposedifferent | When an early product bet still has too many open points, it brings target group, problem, and assumptions into a single view. It condenses the idea so core risks become nameable. | 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. | 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 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 | Low | Low |
Timedifferent | 45-90 min | 45-90 min | 45-90 min | 15-30 min |
Participantsdifferent | 1-6 | 2-5 | 2-8 | 2-6 |
Formatdifferent | Workshop + async | Workshop + async | Workshop + async | Workshop |
Outputdifferent | Lean Canvas, Core Assumptions, Experiment Backlog | A3 Report, Action Plan, Root Cause Analysis | Assumption List, Critical Assumptions, Learning Plan | Root cause notes, Countermeasures |
Tagsno overlap | StartupLeanAssumptionsBusiness model | LeanProblem solvingCoachingOperations | AssumptionsRiskDecisionDiscovery | Root causeIncidentLeanProblem solving |