Abstract

In this paper David Bloor defends his sociological analysis of the disputes over the nature of aerodynamic lift described in his historical study The Enigma of the Aerofoil. The criticisms expressed by Christopher Norris are rejected on the grounds that Norris systematically misrepresents the strong programme in the sociology of knowledge, e.g. by treating the principle of explanatory symmetry as if it meant ‘parity of esteem‘. Some of the various senses of the word ‘realism’ are identified and an account is given of the respects in which the sociological analysis of scientific knowledge can be realist rather than, as Norris insists, anti-realist.