I suppose that this isn't really a new problem: clay tablets got broken, papyrus scrolls and books got burned, wax cylinders became unplayable after they were played too much (or so I'm told), old film stock is flammable or was thrown away, the BBC threw away thousands of audio/video tapes and I heard a horror story a few years ago about some precious tapes of traditional singers which weren't stored correctly and all the oxide fell off. Meanwhile I can't play my collection of LPs because I haven't got a record deck any more (apart from the fact that some of them seem to have their grooves clogged with some 'cloggy stuff' - presumably because I didn't store them correctly). Entropy scrambles all information in the end.