Most investigations in the field of industrial psychology are concerned with the question of how the productivity of the individual worker can be increased, and how he can be made to work with less friction; psychology has lent its services to "human engineering," an attempt to treat the worker and employee like a machine which runs better when it is well oiled. While Taylor was primarily concerned with a better organization of the technical use of the worker's physical powers, most industrial psychologists are mainly concerned with the manipulation of the worker's psyche The underlying idea can be formulated like this: if he works better when he is happy, then let us make him happy, secure, satisfied, or anything else, provided it raises his output and diminishes friction. In the name of " human relations," the worker is treated with all devices which suit values are recommended in the interest of better relations a completely alienated person; even happiness and human with the public. Thus, for instance, according to Time magazine, one of the best-known American psychiatrists said to a group of fifteen hundred Supermarket executives: "It's going to be an increased satisfaction to our customers if we are happy... It is going to pay off in cold dollars and cents to management, if we could put some of these general principles of values, human relationships, really into practice." One speaks of "human relations" and one means the most inhuman relations, those between alienated automatons ; one speaks of happiness and means the perfect routinization which has driven out the last doubt and all spontaneity.