Apparently, the American Computer Giant IBM decided to have some parts manufactured in Japan as a trial. In the specifications, they set standard that they will accept only three defective pieces per 10,000 pieces. When the delivery came to IBM there was a letter accompanying it. _"We, Japanese people, had a hard time understanding North American business practices. But the three defective parts per 10,000 pieces have been separately manufactured and have been included in the consignment in a separate package mentioned -- "Defective pieces as required; not for use."_ Hope this meets your requirement. *In some workplaces Perfection is a Habit, not an Attitude!!*