I recently had some x-rays taken of my teeth on my latest visit to the dentist.  You know, where they stick that giant cardboard thing in your mouth, cover your body from the neck down in a giant lead bib, and the dental hygienist physically leaves the room while she zaps you?  It got me to thinking.  Why is it that they don’t protect your head (okay, I’m thinking specifically your brain here) in any way?  They are willing to protect practically your entire body, the hygienist heads for the hills, but they don’t protect your brain!  I don’t get it.