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Criterion
A3 Problem-Solving workspace showing the question, observations, and next decision.
Operations
A3 Problem Solving
Paper illustration for 1-2-4-All.
Facilitation
1-2-4-All
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 many people in a group too rarely get to speak, 1-2-4-All distributes thinking time more fairly. The format builds participation step by step and makes quiet or still-unformed thoughts usable faster.
Complexitydifferent
MediumLow
Timedifferent
45-90 min10-20 min
Participantsdifferent
2-54-100+
Formatdifferent
Workshop + asyncWorkshop
Outputdifferent
A3 Report, Action Plan, Root Cause AnalysisIdea List, Shared Insights, Emergent Themes
Tagsno overlap
LeanProblem solvingCoachingOperations
FacilitationInclusionIdeation
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Methods with strong topical overlap with the current selection, not yet in the comparison.

Paper illustration for Round Robin Brainstorming
Innovation
Round Robin Brainstorming
Paper illustration of the Lightning Decision Jam working structure.
Facilitation
Decision Jam
Gemba Walk workspace showing the question, observations, and next decision.
Operations
Gemba Walk