“Civilization” Congress from an Indo-European root “kei” meaning “to lie” as on a surface. That takes it back about 4-5000 years. That PIE root certainly had a

“Civilization” Congress from an Indo-European root “kei” meaning “to lie” as on a surface. That takes it back about 4-5000 years. That PIE root certainly had an older ancestral word. Since PIE is from just north of Anatolia it is possible that PIE is descended from a language of Göbekli Tepe.