Every philosopher of science, and every student of the philosophy of science, has heard of Paul Feyerabend: the iconoclast who supposedly asserted that science is not rational, nor objective, but is characterised by anarchism, relativism, subjectivism and power. In this book it is argued that this picture of Feyerabend is false. Though Feyerabend was an iconoclast, his destructive philosophy was also creative. Feyerabend was deeply critical of a particular theory of scientific rationality, herein labelled 'Rationalism' - characterised as the algorithmic application of universal, necessary,...