[iamerroragent]

Because feeling hungry stops when you eat? Presumably your body was taught this when you were a child.

An unconscious zombie might eat but it would be eating human brains. Generally Cannibalism, especially of neural tissue, can lead to prion disease.

The part that separates us from the animals as far as I am aware is language.

Here are people that were not raised by humans, they seem to have an inability to adapt to human society if they develop past a certain age without reintegration with humans:

https://www.treehugger.com/children-who-were-raised-by-anima...

I believe Chomsky attributes recursion as a fundamental part of our language:

https://www.britannica.com/biography/Noam-Chomsky/Philosophy...

And some science suggests the first humans to develop recursive language were twins and their parents couldn't really understand them:

https://phys.org/news/2019-08-recursive-language-modern-simu...

[NotYourLawyer]

I think you’ve missed the point of the article.