From the first time the Doctor saw him he knew he was blind. He also noticed that he saw things others did not. He saw your weaknesses, your fears and your pain. And he exploited them, manipulated them, and he never forgot the person you really were inside. Every time he saw someone new, he analyzed them, read them like an open book, and he did that to everyone he ever met. Hhe knew the Doctor; he knew couldn’t cross those wires, or pull the trigger. He even knew that the Doctor would help to save any life, even his own.