SPC - "Breaking the Spell" of Statistical Quality Control
Shingo once said that it took him decades to "break away from the spell" of SPC. Today, I saw an ad on the back cover an electrical components magazine that said,
"We think statistical sampling is just another way of saying UNTESTED."
They went on to claim that all products are 100% tested. I like the fact that a company publicly declares SPC as indequate in their quality plans. This is the first step to better quality. But, they are still testing 100% of the time. All this does is prevent defects from being passed onto the customer. But what about internally? I wonder what is being done to catch errors before they turn into defects.