That's really interesting! Thank you so much. I'm just brainstorming.. Question: 1. Is it possible that each (speech) disorder has its own (epi)genetics? 2. Could it then be possible that normal activities can also create (epi)genetics? Such as, if villagers from Village A, are all chronic fishers (suggesting that they fish for many hours a day whole their lives). Then, could it hypothetically be possible that, in a thousand years, genetic studies has advanced to the point that they are able to distinguish individual (epi)genetics to recognize which individual has never fished versus individuals who are chronic fishers? The reason for this question is, if "actions" can result in creating (epi)genetics, then simply having such genetics may not be as important of a marker/indicator for persistent stuttering, as we currently believe it to be. And thus, having such genetics by itself, wouldn't then indicate that we are (not) able to achieve a state of subconscious fluency or stuttering remission or speak like non-stutterers during triggers (cf. controlled fluency/compensating left-hemisphere malfunction).