The grocery store was packed. The county fair and rain storm (It always rains at some point during fair week.) was on and there were people in every aisle. Although I didn't have much in my cart b y the time I got to the cash registers the waiting lines were down the aisles three-carts-deep. I saw a self-checkout register, one of four, come open so I began scanning items myself rather than ending up for sure out in Malung Township someplace; I know how things can get out of hand, Maybe it was the unusual crush of people waiting for a register, combined with the difficulty I was having separating and opening new plastic bags in the bagging area that built my anxiety. It wasn't like I wasn't familiar with the self-checkout process. I've done it many times, but I am impatient with a machine that annoyingly repeats things, like "Place your item in the bagging area, " or "Replace the item removed from the bagging area." Granted, I...