Tattoo, my Grandfather talked to himself all the time. He told me there are 2 reasons a man talks to himself. 1) He likes talking to an intelligent man and 2) he likes to hear an intelligent man speak.
When I first started working in this field, I was one of those. Drove the guys right up the wall and through the roof.The "WHY DID YOU DO IT THAT WAY" kind of helper.