Can a being know if It knows everything?

[GameOver22]

kain_kusanagi said:

It's all a matter of perspective. An omniscient being looking in on our universe from the outside can know all there is to know about our universe. From our perspective it knows all that there is to know. It could even know all there is to know about all universes, but we wouldn't see a difference if we could even understand that level of knowing.

You assume that an omniscient being has a limit to it's ability to know. A truly omniscient being could in fact know all things past, present and future. It could exist in all places at all times. It could be all things and know what it is to be those things.

An all powerful and all knowing being could even create a version of itself that doesn't know all things and then reintegrate to experience not knowing something. Or it could just know that all ready.

This. Its really about frame of reference. For a temporally situated being with a subjective view point, I think I would concede that they couldn't know everything because of their inability to view all possible observations. For non-physical, objective beings, I would say omniscience is still possible because, as you said, its possible for them to view everything with no constraints on their observations.