 This is supposed to be a deductive argument against the ‘meta hypothesis’. But in his argument the history of science plays no role. All that is needed for the argument above to be sound is a single instance of a successful theory that is not true. A single non-white swan is enough to falsify the hypothesis ‘All swans are white’—there is no point in arguing here: the more, the merrier! In a similar fashion, it doesn’t add much to argument (D) to claim