A few weeks ago, I made a peanut butter sandwich for my son for lunch. He took his sandwich with him to his room, where he ate and played. Because he’s a typical four year old, it didn’t take long before he forgot about the sandwich and wandered off to do something else. When he remembered his lunch, he returned to it and found that the dog had eaten his lunch, which he had left on the floor in his room. Frustrated, he came to me crying over his lost meal. I made another sandwich, which he took with him to his room. Sure enough, 30 minutes later my son came to me crying and complaining that th...