 It is one of the most troubling things you will ever see. People's personalities change. They become angry. It's not their fault. These are good and decent people. They are losing a sense of self. Who am I? What am I doing here? How do I know this person? Why am I in this place? Can you imagine waking up every day? I'm not suggesting he's that far gone. I don't think he is. I don't think he has Alzheimer's.