Perspectives on Technology consists of papers written by Nathan Rosenberg over a ten-year period, from the early 1960s to the early 1970s. Their origin was in Professor Rosenberg's interest in long-term economic growth processes and, especially, in the behaviour of industrializing societies. The form and direction which this book has taken reflect two basic influences: (1) a growing awareness of the centrality of technological phenomena in generating economic growth, and (2) a growing sense that, in spite of the basic and genuine insights into technological phenomena provided by the neo-classical economics, a deeper and richer understanding of the phenomena can only be achieved by a willingness to step outside the limited intellectual boundaries of this mode of reasoning.