The newer salesmanship, understanding the group structure of society and principles of mass psychology, would first ask: “Who is it that influences the eating habits of the world?” The answer, obviously, is: “The physicians.” The new salesman will then suggest to physicians to say publicly that it is wholesome to eat bacon. He knows as a mathematical certainty, that large numbers of persons will follow the advice of their doctors, because he understands the psychological relation of dependence of men upon their physicians.
