There is, in God’s mind, only one truth about 21th May. And therev is, in God’s mind, only one truth about what I will do 5 April 2042 at 2.30 p.m. I can’t change that fact in any way. That’s fatalism. Fatalsim does not entail that an action occurs in every possible world it entails that, given the initial conditions of a certain world, there is only one future in that world.
Fatalism has to do with the possibility to do otherwise in the actual world. I cannot shift between possible worlds, so I can’t do otherwise.
You will have to start flagging your modalities, because the statement “I can’t change that fact in any way” is ambiguous.
In the present, the fact that you will act a given way in the future is indeterminate. Either option is open to you.
God knows what you do. But the proposition disclosing what you will do could only be true in the present if simultaneity with God were transitive, which it is not. There is no future fact for you to “change.”
Then God refers to an entity that does not yet exist, which, according to you is impossible.
God knows about me eternally
because he exists eternally (and his knowledge doesn’t change).
But for God to refer to “an entity that does not yet exist” (me), he would have to be instantiated in some moment of time before I existed. But that is absurd; God is eternal.
Of course, we could draw a logical distinction between God’s knowledge of the world before I existed and after I existed. I am not something of which God knows prior to my existing.
Yes it does. The fate of this world is determined. Other possible world have nothing to do with it.
The fate of this world is not determined, given incompatibilism and the intransitivity of simultaneity. God’s knowing the future eternally does not imply that the future is true now.
The relations may be Cambridge relations, but the knowledge of those relations is not a Cambridge relation.
God’s knowing creation is causative of creation, however. His creating is a single, eternal act, and his relation to creatures is a Cambridge relation.
God wills himself and he wills creatures. By divine simplicity, he also knows himself and he knows creatures. (The willing and knowing of himself is what is the case in all possible worlds; the willing and knowing of creatures may vary from possible world to possible world because, as Cambridge relations, they do not impute potentiality to God.)
Suppose I had a short relationship with a woman 20 years ago when I was on holiday in a another country, and, without me knowing it, this woman gave birth to my daughter.
I don’t have knowledge of this fact, so, as far as my knowledge is concerned, I am not a father. Yet, the Cambridge change in me happened almost 20 years ago. But, suppose that tomorrow I get a letter form this woman. Then at that time, my knowledge changes, although the Cambridge fact that I am a father has been true for 20 years.
This is correct, but it is not a counterexample to the special case where God’s will and knowledge are identical. (Your will and knowledge are not identical.)
There is a possible world in which God knows only himself and there is a possible world in which, through his own essence God knows himself + creation. So, his essence does differ between world 1 and world 2.
This would require the additional premise that if the objects of God’s knowledge differ, then God’s single act of cognition differs. But I do not accept that principle; only God’s knowledge of himself is necessary, and his knowing of creation, as a Cambridge relation, can be known through his essence in the same intellective act.