Long lines were supposed to be a thing of the past once our neighborhood supermarket installed a self-serve checkout counter. Customers easily figured it out -- except for the woman at the front of my line. In its irritating computer-generated voice, the machine kept reminding her to take one item after another out of the scanning zone before she could check the next. There was a constant "Move ... your ... produce" and "Move ... your ... milk" and so on. Everyone in the growing line was getting restless, but even we had to laugh when she left a bag of dinner rolls on the scanner and the machine commanded, "Move ... your ... buns."