I agree, both theories would be very interesting to discuss in a podcost: * the first theory regarding our tongue, this [diagram](https://drive.google.com/file/d/13N4vqJxO21XRy_Z3I2wo0lIW2Q7_vPnI/view?usp=sharing) could shed more light on the matter * the second theory regarding brain differences, this [post](https://www.reddit.com/r/Stutter/comments/yeki1g/stutterers_vs_nonstutterers_why_are_there/) could shed more light on the matter