You veer toward the left and open the door there. The knob is cool beneath your fingers, and it opens easily, revealing a wide, circular room. You notice a light switch on the wall and, to your relief, it works. The room is filled with piles of books, some tottering up to the ceiling, others only reaching your ankles. How will you ever find your book here? You kneel down and start sifting through some of the piles. It doesn't seem like the room has any theme to it; mystery and fantasy books lay stacked next to medical textbooks, scientific journals, and children's books. You smile as you notice a few of favorites from your childhood.