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Criterion
Paper illustration of a review with planned work, actual event sequence, comparison, and assigned improvement actions.
Operations
After-Action Review
Paper illustration for Accountability Ladder
Operations
Accountability Ladder
A3 Problem-Solving workspace showing the question, observations, and next decision.
Operations
A3 Problem Solving
Purposedifferent
After missions or project phases with unclear outcomes, the method makes visible what actually happened and what can be learned from it. It separates course, effect, and causes so experience turns into solid improvement.With defensive reactions to problems, the method shifts the view from justification to ownership. It makes visible which reaction stage a person or team is currently stuck on.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.
Complexitydifferent
LowLowMedium
Timedifferent
20-45 min20-45 min45-90 min
Participantsdifferent
3-121-82-5
Formatsame
Workshop + asyncWorkshop + asyncWorkshop + async
Outputdifferent
Lessons learned, Action items, Event summaryOwnership Reflection, Action Commitment, Coaching NotesA3 Report, Action Plan, Root Cause Analysis
Tagsno overlap
LearningOperationsImprovement
ResponsibilityLeadershipTeam
LeanProblem solvingCoachingOperations
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Methods with strong topical overlap with the current selection, not yet in the comparison.

A structured reflection surfaces what was liked, learned, lacked, and longed for. It is a conversation format and does not validate actions automatically.
Agile
4Ls Retrospective
Gemba Walk workspace showing the question, observations, and next decision.
Operations
Gemba Walk
Paper illustration for Kaizen Event.
Operations
Kaizen Event