Here is something to consider. Have you ever wanted to see someone's brain? Your doctor sees yours every time he shines that annoying flashlight in your eyes. He doesn't see the big ugly mass you would hope to, just the optic nerve. The optic nerve, however, is technically part of the brain. If you ever have nothing to do, as is so often the case with me (damnit), you could probably find your brain with the help of a mirror and a flashlight.