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Criterion
A3 Problem-Solving workspace showing the question, observations, and next decision.
Operations
A3 Problem Solving
Paper illustration of the Lightning Decision Jam working structure.
Facilitation
Decision Jam
Paper illustration of a calm four-quadrant Assumption Map with hypothesis cards and emphasis on important assumptions with little evidence.
Product Discovery
Assumption Mapping
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.When a decision is stuck, Decision Jam loosens the knot through structured separation of problem, idea, and selection. The format creates movement without jumping prematurely at the first seemingly elegant answer.When assumptions still sit unordered in the room, it weighs uncertainty against leverage. It makes visible which hypotheses should be checked first.
Complexitydifferent
MediumLowMedium
Timedifferent
45-90 min60-90 min45-60 min
Participantsdifferent
2-54-102-8
Formatdifferent
Workshop + asyncWorkshopWorkshop + async
Outputdifferent
A3 Report, Action Plan, Root Cause AnalysisProblem Cluster, Prioritized Challenge, ExperimentAssumption map, Test backlog, Risk ranking
Tagsno overlap
LeanProblem solvingCoachingOperations
FacilitationDecisionProblem solvingWorkshop
AssumptionsRiskExperimentsValidation
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Methods with strong topical overlap with the current selection, not yet in the comparison.

Paper illustration of an assumption matrix with prioritized test cards
Decision Making
Assumption Surfacing
Paper illustration for Kepner-Tregoe
Operations
Kepner-Tregoe
Paper illustration for Risk Storming.
Architecture
Risk Storming
Paper illustration of Riskiest Assumption Test with a method-specific labelled workspace.
Product Discovery
Riskiest Assumption Test