Yes I agree with everything you said. But then there are small things that don't completely line up with your theory. Why can we sing? And why is stuttering genetic? Also, Why would the decrease of stuttering in loud areas mean it's cognitive? Is it because we have less fear of stuttering because they can't hear the stuttering? Or it's easy to pass off a block as them just not hearing you? I also don't stutter as much in places like loud bars and trying to understand why. Everything about the ptsd and trauma is true and on paper it doesn't make sense that a non cognitive disability would just dissappear when people aren't around. But it seems like there's more to it, idk.