They're still laughing about this at IBM. Apparently the computer giant decided to have some parts manufactured in Japan as a trial project. In the specifications, they set out that they will accept three defective parts per 10,000 .
When the delivery came in there was an accompanying letter. "We, Japanese people, had a hard time understanding North American business practices. But the three defective parts per 10,000 have been separately manufactured and have been included in the consignment. Hope this pleases you."