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Microsoft develops ultra durable glass plates that can store several TBs of data for 10000 years
(unlocked.microsoft.com)
This is a most excellent place for technology news and articles.
It has a lot to do with it, because writing is nothing more than standardised pictograms which have meanings and these change a lot over time.
I'm not saying it can't be done but to believe that what has been drawn or represented will be understood correctly 10000 years down the line, by humans or anything else is a big bet.
That is just wrong. Yes the meanings of words change, but images and math dont change.