So it goes throughout civilization: there is not an industry but produces its own special knowledge relating to unclassified details of adjustment.[76] It is this craft-knowledge and common professional feeling which is at the basis of all associations of workpeople, from the semi-religious societies of ancient times, which met in secret to worship their patron-god--Hephaestos, the god of the metal-workers, or Asclepios, the god of the doctors--through the great guilds of the Middle Ages to the trade unions and professional organizations of to-day. Trade unions do not exist simply to raise wages or to fight the capitalist, any more than the British Medical Association exists simply to raise fees and to bargain with the Government. They exist to serve a professional need: to unite men who are doing the same work and to promote the welfare and dignity of that work. It is this which renders so difficult the problems of adjustment which arise owing to the introduction of new and unfamiliar processes. Professional associations are, and are bound to be, conservative: their conservatism is honourable and to their credit: for they are the transmitters of a great tradition. The problem in every case is to ensure the progress necessary to the community without injury to that sense of 'fellowship in the mystery' on which the social spirit of the particular class of workmen depends. It is from this point of view that recent American proposals in the direction of 'scientific management' are most open to criticism: for they involve the break-up of the craft-spirit without setting anything comparable in its place. In fact, Mr. F. W. Taylor, one of the inventors of what is called the 'system' of scientific management, frankly ignores or despises the craft-spirit and proposes to treat the workman as a being incapable of understanding the principles underlying the practice of his art. He goes so far as to lay it down as a general principle that 'in almost all the mechanic arts the science which underlies each act of each workman is so great and amounts to so much that the workman who is best suited to actually doing the work is incapable of fully understanding this science, without the guidance and help of those who are working with him or over him, either through lack of education or through insufficient mental capacity'.[77] Along the lines of this philosophy no permanent industrial advance is possible. It may improve the product for a time, but only at the cost of degrading the producer. If we are to make happiness our test, and to stand by our definition of happiness as involving free activity, such a system, destructive as it is of any real or intense relationship between the workman and his work, stands self-condemned. If we are looking for _real_ industrial progress it is elsewhere that we must turn.