Have you ever found yourself standing in a long line—perhaps at a store, or the bank. It seems to be taking forever and no one is moving. You sacrificed your lunch time to be here, and you start to wonder if you'll have any time to eat at all. You check your phone and scroll through Facebook aimlessly. The person behind you is standing too close and seems to have a cold from the way they keep sniffling and sneezing. You're too busy to get sick! Why isn't this line moving? You