This past weekend, I attended my daughter's track meet. I went to the concessions to get a soda.A little girl, who could barely see over the counter, was in line in front of me trying to buy a jumbo pretzel. Her mother must have given her only $2, and the pretzel cost $2.50.The girl behind the counter was trying to explain that she didn't have enough money. I listened to this and reached past the girl and put $1 on the counter and said, "Give her the pretzel."The girl behind the counter gave the little girl her pretzel and 50...