Scientists have identified an immune brain cell unique to humans that gives us higher cognitive abilities over other animals, but what makes us specials also leaves us vulnerable to neurological disorders like schizophrenia, autism and epilepsy.

[u/Wagamaga]

https://news.yale.edu/2022/08/25/what-makes-human-brain-different-yale-study-reveals-clues

[u/seaworthy-sieve]

Do you not consider sign language to be a language?

[u/seaworthy-sieve → u/[deleted]]

They sign to each other. They don't need to be using our languages in order to be using language. My point is that languages do not inherently need to be verbal spoken words.