" Why doesn’t the brain make it self-evident that it is doing all these things? “Oh, by the way, it is me, Brainsy—in here in your head. I am what allows you to maintain balance and chew your food; I am the reason you fall asleep or fall in love.” Nothing in the ancient environment of brain evolution would select for brains that could reveal themselves thus. Similarly, there is nothing in our current environment to select for kidneys or livers that announce their existence and modus operandi. They just work the way they evolved to work. "

― Patricia S. Churchland , Touching a Nerve: Our Brains, Our Selves