The trick is to inspect to prevent defects. How can this be done? S. Shingo suggested these Basic ideas. Use source inspection techniques that control quality at the stage where defects originate.

• 关键是要通过检测来防止疵品。那么该如何做呢?S·SHINGO提出了以下几个基本点:在疵品出现的阶段使用质量控制的源检测技术。