This is how ancient technically advanced civilizations spoke more and more with smiley in their asses - and as a result, the Egyptians got the hieroglyphs from them.
XX: Well, and there are noises different.
xxx: scientists decrypt sitting - and they are not aware that this is a stupid smiley!
YYYYYYYYY
xxxh: yes, mostly variations on the topic of "yyyy" and other hygykany. They are just so developed.
Then, as civilizations fell, their comps broke, they sat in the caves and continued stupidly on the walls, because they did not know another way of calculating.