What is a zero defect team?

I don't get why you would want a zero defect team. This would suggest that the team is over testing. Personally, I would like one defect per member. This would mean they could have written one more test. They were only off by one.

By the way this is a principle from the newspaper business, who always want one paper left in the box at the end of the day. It guarantees not too much and not too little - eliminate waste.