People have been searching over centuries for the first language believed to be used in the world. (I believe it is Arabic Lang. of course).
One researcher used to put a newborn baby in an isolated area with a guardian who was instructed to not voice any sound, which believed would influence the baby’s word. The baby was made to live by nature but still under supervision of the nanny. No people. Except flora and fauna.
When the baby reached at certain age, the baby started to speak. The first word recorded spoken by the baby was ‘bekos’.
Bekos means bread in Phrygian Language. Hence, the researcher concludes the first language exists in this world was Phrygian. But they are extinct.
By the way, the name of the researcher is Psammetichus.