The Braille article was fascinating. Plus, I felt really smug all day yesterday for a) being able to read and b) knowing the larger context of the Marshall McLuhan quote. I've always wondered how successful blind people assimilate large amounts of information.

That said, I thought it was a little light on the science side of things. Text-to-speech is great and all, but there are already some promising non-invasive artificial vision systems in development, for instance:
http://vision.wicab.com/technology/