Peace be with all!
Jon, you did stir the pot, lol. God is omniscient. But prayer is how we demonstrate our commitment and love for God. Remember, we where created as an expression of his love to express our love for him. It is to commune with God and demonstrate our love for Him.
Now as for what Victor asked about God changing his mind. The plain simple answer is no he cannot. We had this in my Master Catechism class. God cannot change his mind because he is perfect. Perfection defined is; [i:hprar4re]the state of being without a flaw or defect [/i:hprar4re] To change your mind means imperfection and thus says God is flawed.
[quote:hprar4re]Catechism 213 The revelation of the ineffable name “I AM WHO AM” contains then the truth that God alone IS. The Greek Septuagint translation of the Hebrew Scriptures, and following it the Church’s Tradition, understood the divine name in this sense: God is the fullness of Being and of every perfection, without origin and without end. All creatures receive all that they are and have from him; but he alone is his very being, and he is of himself everything that he is.[/quote:hprar4re]
[quote:hprar4re]Catechism 370 In no way is God in man’s image. He is neither man nor woman. God is pure spirit in which there is no place for the difference between the sexes. But the respective “perfections” of man and woman reflect something of the infinite perfection of God: those of a mother and those of a father and husband.241 [/quote:hprar4re]