if german becomes a dead language, for example, we're going to lose incredible amounts of our scientific and broadly intellectual history, reliant on summaries in english and translations into russian. that is inevitable, though. we will forget this. we eventually won't be able to read it.
your precious hegel will eventually be illegible to even the most sophisticated idle bourgeoisie in berlin. perhaps this is when history implodes upon itself - it just swallows itself whole, and disappears into a wormhole, yelling taunts at humanity as it flees.
it reminds me a little of my argument that all history becomes poetry in the end, and that this relationship is determined by the co-efficient of poeticity, which is naturally pi. i'm not sure i've explored this here. that is for another time.