Imagine, if you will, two children walking down a hallway at school. Neither one of them is paying close attention to what he is doing. Consequently, they bump into each other. One child pushes the other down and makes a fist. "He bumped me. He bumped me," the child screams. He is ready to fight. The other child is headed toward class, realizes there is a class to attend and that the hallway is plenty big enough for both of them to pass. So he wants to go around and continue on his way. The first child is still screaming, "He hit me," and wanting to fight.

Now, we commonly think of the first child as ill-tempered, hyperactive, and incorrigible. Consequently, we are tempted to believe that the difference between the two children is that one is a bad child and the other a good child. Actual…