An old man visits the doctors office for his regular checkup The doctor asks him how things are going. The guy says ""Doc, things are great - in fact, I'd say miraculous! You know how I used to have trouble seeing, right? Well now, whenever I want to go to the bathroom, I open the door, and the light magically opens! And when I'm done, I close the door, and the light magically closes - it's amazing! I feel great - better than ever before!"" The doctor is impressed, but concerned, so once the guy…