He just makes a lot of sense in his way. He mentions that we, as stutterers, think that anyone without one is completely fluent—no hesitation, no repetitions—but that's not true. No one is. He always mentions that before a stutter, we anticipate it, and the stutterer keeps their tongue pressed against the roof of their mouth because we are afraid to show any disfluency, but doing this only makes the speech sound different if we do not do that; the repetition, hesitation, etc. comes out smoothly like anyone else. I have noticed this, and I'm trying to consciously take the tongue off the roof of the mouth.