Comment Re:Zero obsolescence. (Score 2) 51
Well, in recent news, they've found a 52 years old tape containing pretty much the only known copy of Unix v4 and they managed to recover its contents, in an almost artisanal way. The thing is, we still know how to read magnetic tapes, even if the specific format is unknown we could make do.
Also, we still can play those olde gramophone disks, because even like more than a century after we still know about how they works.
So it's safe to assume that in 100 years or so, such media will still be readable, even if the means to do so were lost, if the knowledge to do so is still there, there'll be a way.
In a more dramatic scenario we now know how to read 4000 year old Egyptian hieroglyphs thanks to the Rosetta Stone. So along with the media, some kind of "Rosetta Stone" would help a lot. I think a laser-engraved titanium plaque written "hey guys, just use lasers to read these glass slabs here" would do it.