By: Tim Cushing
You stroll into your favorite food-jobber, looking to pick up a few things on your way home from work. Lots of people are on their way home from work. There are lines at every register and someone is in the self-checkout with $600-worth of groceries, beginning what will eventually become a 30-minute stop-start process that could have been handled in a five minutes by even the most incompetent cashier.