Where the iPhone conquered your pocket, the iPad will conquer your backpack. So says Tim Carmody on the Snarkmarket blog, where he puts down his thoughts about why e-books on the iPad will be more successful than some people think. Carmody starts with five common reasons skeptics give that e-books won’t take off on the iPad, and notes that most of them aren’t all that new. (Though he does not address the oft-heard complaint that people will not want to read from LCD screens.) He points out that those who buy the least expensive, 16-gig...