Even a decade after the end of the 1914-1918 war, economic theory assumed that the world was tranquil and orderly. By 1939 an economic slump without parallel, allied to the re-emergence of military ambition in Europe, had brought economic theorists face to face with reality. In this classic book, first published in 1967, Professor Shackle provides a study, in exact and professional language, of the precise nature, structure, presuppositions, language...