Ady – I hope you were being metaphorical with "smashed" but I think you are being very optimistic about how long their scans will last.
They'll be lucky to be readable after 5 decades, let alone 5 centuries. Even if the files do not deteriorate, the US giants who dominate the IT trade are so blindly destructive for mere money, that they might be lucky to be readable in 5 years!
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It's a sobering thought that although obviously no man-made medium is indestructible, no-one has yet invented a record system better than ink on paper, parchment or vellum, for longevity.
Yes, you need learn to read the font and language, but Mediaeval documents on parchment or vellum are still legible. See the Magna Carta copy in Salisbury Cathedral, displayed in a special protective cabinet. Its print, or rather hand-copied text, is still perfectly clear – but it helps the reader to be fluent in Latin.
Paper can deteriorate, book-bindings more so; and some of my early-mid 20C books are quite fragile, but if kept in good conditions, only very slowly; depending a lot on its original quality and its "pre-owned" life.
Yet I was dismayed to find that some of my many photos are already decaying even though on CDs or hard-drives in decent conditions. They suffer from a curious phenomenon I first saw on 3.5" floppy-discs, in that about half the image area was replaced by a brownish-purple rectangle with a very sharp cut-off from that to intact picture.
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Think of the Dead Sea Scrolls. Although only a few intact ones survived, among thousands of bits of others from the region; they date between 300 BCE and 100 CE: around 2000 years old. Most are on parchment, some on papyrus, in beautifully neat script, using carbon-black based ink and reed pens. [Source: Wikipedia].
Eeeh, we think we're right clever with storing all our documents and books in our boxes of transistors….