The world of today is a bare, hungry, dilapidated place compared with the world that existed before 1914, and still more so if compared with the imaginary future to which the people of that period looked forward. In the early twentieth century, the vision of a future society unbelievably rich, leisured, orderly, and efficient--a glittering antiseptic world of glass and steel and snow-white concrete--was part of the consciousness of nearly every literate person. Science and technology were developing at a prodigious speed, and it seemed natural to assume that they would go on developing. This failed to happen, partly because of the impoverishment caused by a long series of wars and revolutions, partly because scientific and technical progress depended on the empirical habit of thought, which could not survive in a strictly regimented society. As a whole the world is more primitive today than it was fifty years ago. Certain backward areas have advanced, and various devices, always in some way connected with warfare and police espionage, have been developed, but experiment and invention have largely stopped, and the ravages of the atomic war of the nineteen-fifties have never been fully repaired. Nevertheless the dangers inherent in the machine are still there. From the moment when the machine first made its appearance it was clear to all thinking people that the need for human drudgery, and therefore to a great extent for human inequality, had disappeared. If the machine were used deliberately for that end, hunger, overwork, dirt, illiteracy, and disease could be eliminated within a few generations. And in fact, without being used for any such purpose, but by a sort of automatic process--by producing wealth which it was sometimes impossible not to distribute--the machine did raise the living standards of the average human being very greatly over a period of about fifty years at the end of the nineteenth and the beginning of the twentieth centuries.