The theory of the iPad has always been simple: size matters. Even in its very first public debut in 2010, the iPad was mostly just an iPhone with a larger screen, and Apple CEO Steve Jobs believed that was enough. Remember the way Jobs sat down on an easy chair to read his iPad, scrolling and panning his way through The New York Times’ website? He was certain that the way you looked at the larger screen, the way you held it, the way you touched it, would all change your relationship with…


