The logical relationships between the ideas of evolution and of special creation are explored here in the context of a recent paper by Alvin Plantinga claiming that from the perspective of biblical religion it is more likely than not that God acted in a ‘special’ way at certain crucial moments in the long process whereby life developed on earth. I argue against this thesis, asking first under what circumstances the Bible might be thought relevant to an issue of broadly scientific concern. I go on to outline some of the arguments supporting the thesis of common ancestry, and argue finally that from the theistic perspective, special creation ought to be regarded as, if anything, less rather than more likely than its evolutionary alternative.