Yeah, I do it at work sometimes and they just say "there goes BJ, having conversation with herself cuz no one is capable of having such intellectual conversation with her except herself!" LOL and they say that because they asked me once why I always ask a question and answer myself without waiting for another response. Well, my response to that was that no one is smart enough to converse with me except for me! lololol
In actuality it helps me think better when I verbalize what I am thinking. I do that with reading, as well. I have to read aloud or my train of focus gets off track.