
Wisdom comes from learning. A retrospective takes Time to Think. We go back to history, gather significant observations, make sense and decide what to do. A3 process deepens the corrective actions.
We facilitate retrospectives for projects, teams or management teams. Pair facilitation is most effective training.
The only reasons not to do retrospectives are ignorance, fear and short term thinking. Even, when a team is good in improving at everyday work, a dedicated retrospective is giving more.
Size and loaded emotions call for an external facilitator. (Blog)