Dean Burnett

but you could argue that it’s an inevitability when you make endless amounts of food available to a species that has evolved to take whatever food it can get whenever it can get it.

Broca’s and Wernicke’s areas were identified because damage to them caused aphasias, which are profound disruptions to speech and understanding. Broca’s aphasia, aka expressive aphasia, means someone cannot ‘produce’ language. There’s nothing wrong with their mouth or tongue, they can still understand speech, they just can’t produce any fluid, coherent communication of their own. They may be able to utter a few relevant words, but long complex sentences are practically impossible.

Some argue that language is even more neurologically important. The theory of linguistic relativity claims that the language a person speaks underlies their cognitive processing and ability to perceive the world.