Thanks for the insight. This definetely helps to answer his questions and give him an honest debate. I'm sure his answer to many African tribal languages not being written will be that they're not real languages, either. Anij, you are correct, he is a communications assistant, and he has professed a hatred for his job and dislike for deaf culture on more than one occassion. But again, he is very smart and educated.
I took the time to look up the dictionary definition of the word language, and in all given definitions are summarized as a form of expressing thoughts, words, and ideas. Not a thing about the form or medium to which it is expressed through that limits the definition. Again, thanks for all the help.
