My point is it doesn't matter the Chess position that someone is in. I don't want to appear as if I am playing a semantics game so I'm going to expand the analogy a little further: 1. Person x is in Chess position y 2. Person x believes that z is the best move in Chess position y 3. Person x then makes move z, thinking that it's the best move. Person x truly believes that that's the best move. But just because person x thinks that z is the best move, doesn't make it the best move. So, my whole point in this analogy is that if you take a group of people that have the exact same problem, and is caused the exact same way, then that one solution is going to "cure" their stuttering. I'm not talking about mixing up different causes of stuttering such as "anxiety-related" stuttering or if someone got into a car accident. I'm only putting my focus onto one of those causes, and that describes people that know they don't have any brain ailments, whether genetic or environmental, but just so happens that he or she blocks in between certain sounds. When a stutterer blocks, what happens? Their mouth and tongue stop moving all of a sudden. As a matter of fact, how do you think someone is able to speak 100 words in a super fast way without moving their mouth and tongue fast? This is a requirement for speaking. The only reason why someone has a speech block is because they fail to transition in between two sounds. If you've achieved fluency a different way, I'm arguing that your way revolves around my way, rather than vise versa, because I'm assuming this to be a causation and not a correlation of speech. You also agreed that the physical can impact the mental, but then you contradicted yourself right after by claiming the opposite (that the mental can impact the physical). Does computer hardware (the "physical" for this analogy) impact the software? Yes. Can a website (the "mental") directly impact a RAM stick? No. Also, how did you achieve fluency? How do you have fluency defined? Do you have an ability to speak fast?