A male child is born and is a perfect physically complete boy. Throughout the early years he is dressed in boy clothes and given boy toys. Yet he knows he is a girl. Isn't his brain telling him this? Doesn't he have a female brain? If so, how can male and female brains be the same? No physical differences, you say? Is the brain only cells, or does the brain include what's in it? Or do you call that the mind, and the brain just the physical?