• Blue_Morpho@lemmy.world
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    1 day ago

    We have clay tablets that are 3,000 years old and still readable. Those qr codes aren’t etched deep in granite but some will survive through luck.

    • GraniteM@lemmy.world
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      13 hours ago

      Granite is astonishingly durable. A marble gravestone from as little as fifty years ago is already losing its edges, whereas I’ve seen granite stones from 100+ years ago that still look crisp and new.