Callum was intrigued by two men working on a country road. One man would dig a hole two or three feet deep and then move on. The other man came along 25 feet behind and filled in the hole. "Hold it, hold it," Callum said to the men. "Can you tell me what's going on here?"
"Well, we work for the county," one of the men said.
"But one of you is digging a hole and the other fills it up. You're not accomplishing anything. Aren't you wasting the county's money?"
"You don't understand, mister," one of the men said, leaning on his shovel and wiping his brow. "Normally there's three of us: me, Hugh and Willie. I dig the hole, Hugh sticks in the tree and Willie here puts the dirt back. Now just because Hugh's sick, that don't mean that Willie and me can't work."