evolutionary psychology

[evolcon]

It would take a lot more than one case study to establish your point. You have to show that Joseph represents the norm under those circumstances.

Plus, from what I read, while growing up he was treated as retarded. Not really a situation conducive to learning. Also, I didn't read where Sacks actually worked with him to document his non language cognitive abilities.

Would things have been different if the parents knew that he was deaf and communicated with him thru non language ways, like pictures?

The Sachs quote aside, the brain of humans is structurally different from other animals, it evolved differently, In the late Pleistocene, mankind developed language. The brain is now structured to store and use language, it must store a large lexicon of words used to converse. Man can now instruct, explain and agree, plans can now be made, strategies constructed, this is a skill available only to humans. This is the difference between human and all other animals, and it is a large difference