In my first experience with the Kindle, I was fascinated by the backflash. It's clearly not desired, but the technology apparently isn't there yet to do away w

In my first experience with the Kindle, I was fascinated by the backflash. It's clearly not desired, but the technology apparently isn't there yet to do away with it. I just found it so neat that such an apparent flaw is kept in the product because even with it, it's a "good enough" experience. If I imagine myself on the team making Kindle, I think I might find it unacceptable that the screen flashes on every page turn. Aside from that, the first Kindle had some sort of really awesome scrolling mirror thing on the right. What is it, and how does it work? How can you make material selectively reflective like that?