Now tell me, do you disagree here with nature, that you're opposed to the concept of mandating an individual that it is forced to live with the body and brains that nature chose?

Ever heard of plastic surgery? There is also spirited debate over whether intelligence is more a result of nature or nurture. So, yes, the person may still have the same physical brain cells that he or she was born with, but the important thing is what he/she does with them to increase his/her intelligence. So you cannot mandate that an individual stay ignorant, although stupidity is a lot harder to change <g>.