The Christian is foreknown and predestined only in the sense that he shares the destiny of Christ Jesus, it being Christ who is foreknown and predestined in the absolute sense. This is much like being destined to travel to New York, by virtue of having boarded an airplane or train which is bound for New York.
God does not look into the future to see that which the future holds; rather, God decrees the future, and then brings to pass that which he has decreed.
Thus, the future has not been written in detail; man is not acting out a script.