Abstract
The present paper shows that the clearest formulation of J. M. E. McTaggart's antipassage argument, that of D. H. Mellor in _Real Time II, is unsound when its premises are interpreted so that it is valid. This argument need mislead us no longer. The crucial item in the interpretation of the premises is the copula 'is', as in 'E is past'. The copula may be either tensed or tenseless. While this ambiguity of the copula has been noted before, its implications for McTaggart's argument had not been adequately exploited. This paper does that job