Another question about omniscience is whether it is really complete knowledge unless it is extended to de re (see the supplement on the de re/de dicto distinction in the entry on propositional attitude reports) knowledge, that is, knowledge with respect to specific individuals that they have certain properties (or with respect to particular pairs of individuals that they stand in certain relations, etc.). This issue has not received much discussion in the literature, but Prior (1962) called attention to it by taking the claim that God is omniscient to entail