It raises questions of a socio-historical kind, such as: when did economics acquire a sufficently coherent and well-attested paradigm to rank as a distinct discipline? What were the distinguishing characteristics of successive paradigms for economics? How revolutionary were the changes attributable to periods of significant theoretical change? How can we explain the success or failure of alternative paradigms in gaining a hold over the minds of a majority of professional economists? All economists will find valuable insights in this book. For undergraduate students it is a compact and readable introduction to the history of economic thought.