Digital books are great in many ways.<p>* Lightweight, I can literally carry a whole library<p>* Searchable, no need to take notes of where a sentence is<p>* Accessible, in the sense of dynamic font size<p>But where it fall short is the overall experience when using one.<p>How many time I wanted to compare two (or more) pages from either the same book or two different books?<p>With printed books, it's easy to leave a finger between two pages and quickly switch back and forth, and optionally annotate or highlight something.<p>With an eReader it's often cumbersome or slow to do so.<p>Being able to map a page to a list of physical buttons (I dunno, make that 3 or 4 bookmarks buttons) to quickly jump to a page would make the whole thing much more pleasant in term of user experience.