Can God have actual knowledge of a book that is not written now but will be written? Yes.
No, not until it will be actually written.
Can God have actual knowledge of a book that is not written now and could be written, but won’t be written? No.
Agreed.
Can God have counterfactual knowledge of a book that is not written now and could be written, but won’t be written? Yes.
Counterfactual knowledge is not “knowledge”. The proposition of “if it will rain, I will take an umbrella” does not evaluate to either “true” or “false” until the conditions apply. Propositions about the future only gain a “true” or “false” status when the actual future rolls around.
But the dogma does not speak of counterfactuals. It states that God has “knowledge” about whatever is possible, even if it never gets actual.
Besides you did not analyze the fourth possibility:
"missing 4th possibility:
Can God have counterfactual knowledge of a book that **was never **written, is not written and will never be written, but could have been written?
No! This would be knowledge of something that never existed, does not exist and will not exist - though could exist. It is included in the wording of the dogma, but it is complete nonsense. .
As a matter of fact non-existent objects cannot be subdivided into categories. There is no difference between a nonexistent book and a nonexistent billiard ball. There is no difference between a book which was never written by Hemingway and another one, which was never written by Faulkner. Nonexistence has no attributes.
God is not “living in the present” like you and I, though, since He created time and is outside of it.
This does not help you. You imagine God living in a permanently frozen, timeless existence. This, of course contradicts the notion of an active God, who is immersed in our time-infested, forever changing existence. It is a simple contradiction that God is both frozen and also active. Any action presupposes a change, and any change presupposes a time. Actually God was issuing “commands”, like “let there be light, and there was light”, which is a clear indication of an active “unfrozen” God (even if the words are just allegorical).
The point is that God being frozen “somewhere out there”, does not make him aware of our nonexistent future - because there is no “fixed” future. The image of the frozen God indicates that God “peeks” through a window, and sees the “film” of reality slowly “unfolding”. The usual picture that our whole past, present and future are somehow available for God for “inspection” is yet another contradiction. Not to mention that it negates the existence of any kind of free will. If the “future” already exists, then we have no freedom to act differently from what that already existing “future” indicates.
It is not a coincidence that we speak of “past, present and future”. That is reality. And as we already agreed, there is only one reality. There is no separate actual, physical reality, and another “divine” reality.