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Before “Just Culture,” There Was NUMMI: Learning Instead of Blaming
TL;DR: NUMMI proved in the 1980s what healthcare is still learning today: you can't punish your way to safety. Real improvement comes from mutual...
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Lean Blog, founded in 2005 by Mark Graban, is one of the longest-running Lean management blogs. It shares practical insights on Lean management, psychological safety, and continuous improvement — focused on better systems, better leadership, and better outcomes for customers and people.



































