Many a psychologist conducts his researches on animal intelligence by noting how rats run through a maze. If you were a psychologist, and got hold of a race of rats showing high susceptibility to constipation, fallen arches, varicose veins, stomach ulcers, hernia, sagging viscera, poor circulation, crooked and decaying teeth, spinal curvature, sacroiliac trouble, bad tonsils and audible adenoids, you would undoubtedly find this afflicted race much more stupid at maze running than normal, healthy rats. You would conclude that rats with the best biological endowment are the most intelligent rats, and that your afflicted, stupid rat race...