Abstract
In the articles that Skillen criticizes, I am concerned with the problems posed by the 1 social character of knowledge. To defend realism, I argue, it is necessary to develop a historical account of knowledge, involving relative concepts of truth and falsehood. Although Skillen shares the desire to defend realism, he can see no value in this approach, which he variously describes as `obfuscating', `obscuring', and lacking `rigour' and `consistency'. Indeed, he cannot even see the problems I am dealing with. The whole exercise is `unnecessary', he says, `the social development of science' poses no problems for `traditional realism' or for the absolute concepts of truth and error