language takes place in the first few yrs of life. it is then we become social forever, even if we spend the rest of our lives alone. when you have a thought in your head, it is language. you cannot have a thought without language. they have found humans raised in cages and they did have some slight non-verbal language, like banging the cage was the emotion of anger. i suppose the sounds accompanying that was language (if they made sounds). so, they were in fact social creatures, however primitive their skills were. of course that language has to be understood by all. but they would have to be able to make sounds in order to be social. i have heard one of them did not speak, so maybe we have had at least one who had nothing that made it human in a sociological aspect, just physical features. and if you were to turn that person loose out in the wilderness, they would have no connection to humans via thoughts or language. i think it would be interesting to study and do a paper on. i did one years ago, but it has been so long ago, don't recall much. it was the forst one they found i think, a girl raised in a cage. it is nearly impossible to teach language one can communicate with (abstract thoughts) past the critical period (when very young). they can learn words, but cannot verbally express them in the proper context to mean anything (form sentences they can comprehend). it is fascinating to me that it has to do with pitch, the fluctuation in our voice, punctuation, and the use of grammar in the correct order. that cannot be learned after a certain age. i could look all this up, but i was just trying to recall a few things from college. this was actually taught in an english class.