Yeah, but when all hell breaks loOse, you can slide your entire library into your pocket with a solar charger, while you have to leave all your dead tree books behind.
...oh man, I've been reading too much dystopian/end of days/scifi... I was totally shopping for a solar charger yesterday!
They must have used multicolor LED's and finally realized it. ~ S. attempting to explain the colorful blobs on Kindle Paperwhite screens.