Surely it's obvious that language production and perception evolved out of more primitive animal vocalizations, used for communicative purposes. How could it no

Surely it's obvious that language production and perception evolved out of more primitive animal vocalizations, used for communicative purposes. How could it not have ?! Note that human speech ability required more than brain support - it also required changes to the vocal apparatus for pronunciation (which other apes don't have), indicating that communication (vocalization) was either driving the development of language, or remained a very important part of it.