well, I talk to myself and I answer myself after some period of reflection. I mean if I ask myself a question I have to answer it right? Anyway, everybody around me thinks I am crazy. Actually its mostly at work narrating my actions. One colleague once said she read in an article, wish I could find it on the internet, that talking to yourself while performing tasks reduces the chance of mistakes. Apparently she said, thinking is a more fluid process and you can easily be carried away. While talking involve much more brain resources and is a much more focused task, therefore less likely that you will loose your stream of thought. I personally think of that like when someone is counting something loud and when you try to interrupt rises further his voice continuing to count like meaning, fuck off, you are distracting me.