Researchers finally figured out why doctors' waiting rooms have such crappy magazines

When waiting for the receptionist to call your name in the doctor's office, you are powerless. You can't go anywhere. You don't know how long it will take. There isn't much to do. Some people play Candy Crush or Threes on their iPhone. Others tweet things tagged #waitingroom. And some of us read. At least, in a good-faith effort, there's usually a thick pile of magazines. But when you go over to pick through the stacks, there's another problem. Most of the magazines are crappy and old. Why? After all, your doctor and the rest of the people working in the office are smart and presumably just as interested in good reading material as you are. So what's up with the subpar selection?