The scientific method is just the ability to form a constructive hypothesis and testing it to get a result I don’t recall OP saying that chart is the actual end result proving the theory plausible or true they were just saying from their experience it matches this hypothetical which in their case is true. No one is saying (that I’ve seen) this model is the 100% reason why people stutter I think there’s some miscommunication/interpretation between you & OP and maybe even with what I’m getting at bc yourself and I are saying the same things I agree with you and you’ve reiterated things we’ve already agreed on. With that said I hope you have a great rest of the day and hope you have many days of fluency (assuming you stutter as well).🙏