I agree with you. Moreover, I think that combining our experience and insider knowledge of this terrible malady can if not solve the problem, then contribute to its resolve. Now about “blocks.” Blocks happen not only in the middle of the speech but also even before the speech has not started. Yes, there are two phenomena: Overt and Covert. For most of my life I tried to covert. There were hard moments in my life when I decided to come out of the closet and be Overt, i.e., talk no matter what. In the hope of “accepting” my new, real identity. Alas, that did not help me… Probably because I could not accept myself. So, when the dust settled, I returned to “covert” mode. What’s interesting is that when I began teaching in colleges, I found that when I speak alone, specifically in a position of authority, I am 99% fluent. Perhaps, acting played a role too. Regarding the nature of “blocks” – it is a scientific problem, involving physiology and psychology and still remains unsolved ( I follow research in the field). I developed my own theory, based on motor control and communication engineering (I am an EE engineer). Hope to complete it soon and possibly publish it.