Comments on Professor Kerferd's Paper.

The article focuses on the authors' comments on scholar George B. Kerferd's paper, Two Problems Concerning Impulses. As Professor Kerferd indicates, both models postdate the ancient Stoic school and thus could not have been the mechanical or physiological models upon which their account was based. I am in substantial agreement with scholar Kerferd's explanations. I should say a bit about the vagus nerve. I am not entirely sure just what scholar Kerferd means, the rate of heart beat is regulated by a very complex interaction between the heart and the rest of the body, including but not limited to stimuli carried by the vagus nerve. In the context of a discussion of Stoic ideas, the analogy is more bewildering, since Stoics believed the heart to be the location of the governing power.