My son and I were taking a walk outside when he noticed our neighbor's lawn. It had been recently aerated, and little mud plugs were left all over the yard. "Mom, there's goose poop all over that guy's yard!" he said. "No, that's just dirt," I replied. Then I attempted to explain the process of aerating a yard. My son frowned. "That's just messy," he said. "It needs to be cleaned up." Then he got down on his hands and knees and started putting the plugs back into the holes. He just didn't get it.