Oh no. Setting my new Christmas Kindle atop the mound of books on the nightstand beside my bed last night precipitated an avalanche. Books and Kindle took a tumble onto the hardwood floor. The books, of course, were fine. None the worse for wear. But this morning when I launched my Kindle, something was very wrong indeed. The screensaver image—a bird, some warbler or meadowlark gripping a reed—stayed pasted over half the screen. I’d been deeply engrossed in Jonathan Franzen’s …