BY PHIL DAVIS
One day one of my eight-year-old sons was in the living room playing while I was reading. He had a wooden yardstick, and he was holding it and jumping over it. I heard the crack but pretended that I didn't in order to see his response. Immediately after the sound of the crack, he scurried out of the room. He stopped in the hall, just out of my sight, so he could survey the extent of the damage and figure out his next move....