Interesting comment by Neal Stephenson

Paper's a really advanced technology. That was brought home to me by working on this, when I read a lot of documents from that era, which were put down on really good, acid-free paper. They're all pretty much as good as they were the day they were made 300 or 350 years ago. This is not going to be true of today's electronic media in 300 years. There's a lesson there.

-- Neal Stephenson