I'm doing my holiday shopping this week, and it struck me how in some ways, the changes the publishing industry faces right now are a lot like the changes a family goes through as people evolve and grow. In my family, we don't buy for adults but we do buy small presents for little children, and the puzzle this year has been what to do about the baby niece. Her toddler brother is no problem; he's old enough to have a personality and is obsessed with dinosaurs right now, so we'll be buying him something dinosaur-themed. But his newborn sister doesn't...