Might I be God? I think there can be two readings of omniscience. — Kuro
Omniscience means 'all knowledge'. If - as many contemporary theists foolishly do - one defines it to mean 'all truth beliefs' then one is simply misusing a term (for one can be in possession of all true beliefs and yet not be in possession of all knowledge). Certainly it is no abuse of the term 'omniscience' to use it to label someone who is in possession of all knowledge.
Furthermore, if one defines God as a person who is in possession of all true beliefs, then one runs into difficulties, for that seems incompatible with omnibenevolence. God would turn out to have true beliefs about my bowel habits and my inner most secret thoughts - all of which are things a good person would not wish to acquire true beliefs about, due to it disrespecting another's privacy. And God would also have to believe that he is morally perfect, which is incompatible with being morally perfect (you're not humble if you believe you're morally perfect, yet humility is something a morally perfect person would need).
So, the contemporary theist is simply abusing language and abusing it to no advantage, as their abuse makes their view incoherent.
Anyway, like I say, it is no abuse of the term 'omniscient' to use it to denote someone who is in possession of all knowledge - after all, what else would one call such a person?
But you are willing to grant me this and think that I can still know that I am not omniscient in this (correct) sense of the term. But in fact you swapped my definition of omniscience for another and said that it is to be in possession of all potential knowledge. To be omniscient is to be in possession of all actual knowledge, not all possible knowledge. If a true belief is a possible item of knowledge, yet does not yet qualify as such, then lacking it does not make one lacking in knowledge. If I own all the world's trees, but not all the world's acorns, I still own all the world's trees, even though i do not own all the potential trees.
So, the fact that I do not know what 175 x 345 = does not necessarily entail a lack of knowledge on my part, for if I am omnipotent - something I can't establish with certainty that I am not - then I am the arbiter of knowledge and thus when or if I figure out what 175 x 345 is and favour myself believing it, there is no knowledge of what that sum equals, only true and false beliefs about it.