IMAGINE A FARMER walked down a backcountry road and saw another farmer repairing a fence. His young sons were helping him. “Why are you letting your sons help you?” the first farmer asked. “It’s going to take five times as long. You should just do it yourself.” “Oh, but you’ve made a mistake,” the second farmer said. “You think I’m repairing a fence. I’m not. I’m raising my sons.”
