When I asked if he could control it he said "Hopefully" and then mouthed the word hopefully.
LOL. That totally sounds like something my DS would do. It's great that your DS is able to explain it and is aware of it.
Well I am pleasantly surprised that DS is not the only one at least, even if there aren't answers as to why. However maybe Skylers comment about the memory thing could be related because DS4 does remember everything. Maybe it is his way of recording it all. He doesn't mouth things when he silently reads or anything...or when other people talk he doesn't mouth things. I did have a few friends that would do that though. They would move their mouth when I would talk. It's interesting.
