The future is open, like forks in a road. One road leads one direction, another in a different direction, etc. But this is absurd, for everything would be predestined through God's foreknowledge. But to call it absurd is too strong. This objection is similar to Objection 4, in that each seems to miss a critical point in the incompatibility argument.
Postscript Consider a version of the argument, put differently.
Some of these facts we call past facts, relative to our present, and others we refer to as present and future facts, relative to our present scheme of reference. So things appear to us quite unlike they would to an omniscient God, who would have access to all knowable facts, be they in our past, in our present, or in our future. Such a God would be outside of time in this respect, not bound by the temporal constraints placed on us. God's foreknowledge of all the facts is akin to the truth of our past, which we consider as established through our knowledge and truth regarding it. In short, such a world would be devoid of freedom, if overseen by an all-knowing God.