There's a digitally-restored print of the Powell and Pressburger film The Red Shoes out and about, and last autumn I saw a screening introduced by Thelma Schoonmaker, the Oscar-winning editor and widow of Michael Powell. She did a talk about the digitisation of the original three-strip Technicolor negative and the computer malarkey to colour-correct and line everything up.

Then she said that in this digital age actually the best way to store the movie for future generations was to print it back out to traditional film, as we know that can be stored for 100 years whereas digital storage media turn out to be flaky in themselves, not to mention subject to the obsolescence caused by rapid advances and changes in the technology. That's the first I had really heard of it as a serious long-term problem for archives.

Technically, I suppose, you could print the digital information for a movie or an album onto paper... but that would be thousands or millions of pages for each item and rather impractical...