[Responding to criticism from Dr. Hesse] Voodoo, Dr Hesse's piece de risistance', is case in point. Nobody knows it, everybody uses it as a paradigm of backwardness and confusion. And yet Voodoo has a firm though still not sufficiently understood material basis, and a study of its manifestations can be used to enrich, and perhaps even revise, our knowledge of physiology.
Why is the operation of circumcision practiced? One might as well attempt to explain the rites of voodoo!