Indeed, if a chief question does remain: how is the power to think possible? - The power to think right and left, before and without, with and above experience? then it does not take a deduction to prove the genealogical priority of language.
I have a company in New York City producing music for commercials, for radio, TV, features, etc. That's how I've been making my living. And now the company is very successful - to the extent that I can afford to come out and play.