 To conclude this discussion of the metaphysics of fictional objects, it is worth noting that neo-Meinongian and creationist theories seem to suffer from complementary defects. On the one hand, neo-Meinongians provide exact identity criteria for fictional objects, but these criteria are clearly insufficient in that they do not take into account the fact that such objects are products of the human mind. On the other hand, creationists do account for this fact, but they only provide relatively non-specific identity criteria for such entities. Those theories are normally taken to be incompatible, for they appeal to different metaphysical models—broadly speaking, a Platonic model as opposed to a constructivist one. This claim of incompatibility should not be taken as definitive, however; there may well be ways in which the two theories, or perhaps the most promising elements of each theory, can somehow be combined (for recent attempts to go in such a direction, cf. Zalta 2000, Voltolini 2006).