Great comment! I think that a subset of PWS have a genetic or neurological predisposition to stuttering (that impairs speech or language). In fact, 6 family members stutter(ed), so I'm a firm believer that it's genetic, at least for me. Considering the other side of the coin, three of my family members have recovered from stuttering. They have achieved a phase of subconscious fluency and stuttering remission. I have asked them how they did it, and they explained to me that it's a combination of choosing to move the speech muscles, confidence in your speech performance, not caring about anything (such as, people's judgement, negative past experiences with stuttering or what anybody tries to sell you about what they think stuttering means), etc. Conclusion: So, I might not be able to change my genetics. However, this doesn't prevent me from working on aspects that I can control. In other words, my life's motto is: Accept the things I cannot change, have courage to change the things I can, have the wisdom to know the difference (Reinhold Niebuhr). Accept that a certain amount of discomfort is unavoidable (cf. the Buddhist “4 noble truths” of suffering).