Exercise, according to the book, restores the patient to normal. Elegant prose and cool, clinical language provide the book with an aura of scientific objectivity. Careful examination, however, reveals the book to contain more value-laden rhetoric than logic, more religion than science. Let's examine its authors' cognitions and attributions. Let's examine the book's fallacious reasoning by Undistributed Middle.
All dogs have hair.
Therefore, all cats are dogs. The absurdity of the argument is obvious, since cats are not dogs. It is fallacious to conclude that because two entities share some characteristics, they are the same entity and should be treated the same way. Demitrack employs this fallacious reasoning in his first full chapter, Chapter 4, where he discusses endocrinology and immunology. The implied conclusion, of course, and the one the unsophisticated reader walks away with, is that CFS, too, is one of these latter states or something similar to one of these states.