Between the scientific positivism of Karl Popper and the revolutionary perspective of the Kuhnian school, Mulkay probably stands on a slightly left ground, follows Robert Merton who has been known partially as the predecessor of Sociology of Scientific Knowledge.
Kuhnian: The philosopher of science, Thomas Kuhn argues in The Structure of Scientific Revolutions with respect to the Copernican Revolution that people are unlikely to jettison an unworkable paradigm, despite many indications that the paradigm is not functioning properly, until a better paradigm can be presented.