Why do we digitize books instead of knowledge?

Besides text and images, contemporary e-books can include multimedia, interactivity, pronunciation information text-to-speech ready content. The current EPUB 3 standard provides all the technical solutions necessary for designing displaying highly functional content rich e-books, but implementation is impaired by e-reader industry, publishers distributors. Local global book digitization has been an ongoing process years, encompassing publications ranging from classical literature to textbooks. Textual expression of knowledge a remnant past it still dominant today, even though interactivity video are known significantly enhance learning process. However, multimedia interactive not produced because requires time, specific tools. Within publishing system, authors expected produce design books on their own, extreme diversity, unrealistic expect that they really possess such skills. Better collaboration among authors, publishers, distributors, professional community related industry function.