Books come in an enormous variety of shapes and sizes. E-book readers, tablets and smartphones, in contrast, come in very limited sizes. You cannot always succ

Books come in an enormous variety of shapes and sizes. E-book readers, tablets and smartphones, in contrast, come in very limited sizes. You cannot always successfully transpose the content from a physical book to a smaller electronic device, at least not without re-designing the layout of the book. Plain text books, such as fiction, are the most easily adaptable to smaller electonic displays. But many other books require a redesign to make them suitable for reading electronically. For example, the simple act of scanning a two-page spread with your eyes is difficult or impossible to do on mobile devices (and not very comfortable if done on a big monitor compared to holding a book or magazine in your hand). So E-books will evolve, but physical books have a long shelf life ahead of them.