"In 1962, Thomas Kuhn wrote The Structure of Scientific Revolutions, arguing that science proceeds in two ways. 'Normal' science does experiments and expands our knowledge under agreed theories; but 'revolutionary' science introduces a new conceptual framework (a 'paradigm shift'), and demands that we abandon some of what was previously believed. . . . This very useful collection shows the evolution of Kuhn's ideas from 1970, with replies to his critics (including Popper and Feyerabend), and a long interview conducted a year before his death in 1996."– "Guardian"