BTW for about archeology, this remembers me ancient writings on birch bark. They was not time-prone, so mostly just disappear. And now people ask, are you sure

BTW for about archeology, this remembers me ancient writings on birch bark. They was not time-prone, so mostly just disappear. And now people ask, are you sure, existed such civilization? How it is possible, we know https://en.wikipedia.org/wiki/Antikythera_mechanism https://en.wikipedia.org/wiki/Antikythera_mechanism but no journals, no blogs of ancient people, who done such smart things?