Ah, but e-books could (and should) hide "Easter Egg" data bits - could be photos or videos or audio clips or any type of data - only accessible through some special trick, like they do in video games, creating a multi-media effect: An e-book primarily based on reading, but with a twist...
I used to do this on my textbooks as a kid, nothing so amazingly elaborate, of course. I remember how hard it was to get the lines straight and to keep the edges in line while doodling.
#8 Rochester Institute of Technology has a fine collection of these. I'm sure if you e-mail them they'd be happy to share info on the technique. I took a bookbinding and paper making class there one summer and it was a fantastic experience.
I cannot read on my Kindle . . . there is no way to find where I am at . . . no markers, no headings that tell me where I am. I also miss typographical niceties, and the number of weird errors in Kindle text is so annoying. . . I suppose it is like that with all ereaders. I prefer print technology for reading to this day. Something as beautiful as this (correctly the order is summer, autumn, winter, spring, from top to bottom) is just icing on the cake.
On the other hand, I'm interested in new reading technologies, and ways to consume text.
For example, what would it be like to read an e-book using Google Glass...or other goggles.
I wonder how they made these?