If babies had no idea about the world, they'd not cry
They don't cry because they think "Well, I'm hungry. Let's cry and see if anyone hears me! Maybe they'll bring me food, too". They follow their instincts; it's later in life do they learn that they can eat on their own if they know there's food around. You'd cry of pain if someone was to stab you in the leg, and it doesn't matter if you know or have shielded yourself from knowing who stabbed you or what did they stab you with. Instincts and reflexes have nothing to do with ignorance, other than the fact that we can learn to override them if we find out why it might be useful to us.
I agree with most of the second paragraph.