Manufacturing Defects

Manufacturing Quality Control: Lessons from Deming's Red Bead Experiment

Introduction

In the world of manufacturing, delivering defect-free products is essential to continuous improvement, customer satisfaction, and business survival. Yet, many organizations struggle to drive lasting quality improvement, all too often relying on inspection, motivation, and punishment, without addressing the root causes of problems. One of the most influential demonstrations of these issues is Dr. W. Edwards Deming’s Red Bead Experiment—a timeless lesson that challenges traditional management assumptions and points the way toward true process improvement.