This book is the outcome of a Development Studies Association Workshop on Technology that we convened in Queen Elizabeth House in March 1980. In the 1960s and 1970s most research on technology in poor countries was directed at the question of the labour or capital intensity of production technique (sometimes described as the ‘neo-classical’ question). The collection of essays raises questions as much as it provides answers: but in so doing it provides a comprehensive introduction to the major new topics which are of substantial concern to those working on issues of technology and development.