The first battlefield tanks looked like heavily armored tractors equipped with cannons; early automobiles were called “horseless carriages” for a reason; the first motorcycles were based on bicycles; the first satellite phones were as clunky as your household telephone. A decade ago, when newspapers began serving up stories over the Web, the content mirrored what was offered in the print edition. What the tank, car and newspaper have in common is they blossomed into something far beyond their initial prototypes. In the same way that an engineer wouldn’t dream of starting with the raw materials for a carriage to design a rad new sports car today, newspapers won’t use paper or ink anymore. Neither will books. But mere text on a screen, the stuff that e-books are made of, won’t be enough.