The lesson here is don’t assuming something is finished until you’ve tested it thoroughly:
Right before Christmas, Harry and David’s, the big mail-order company, put a new computer system into service. It had bugs. Hundreds of orders were mixed up. One woman who ordered a large turkey received one large turkey every day for a month. Soon after they started arriving, she called the company, and they told her that they were overwhelmed, so she could just keep the turkeys. At first this was great, but after she ran out of freezer space, and after everyone she know got free turkeys, they kept coming. She had to carry them to the trash.