> An average person, talks to himself multiple times in a day, evaluating decisions, simulating how things are/should be, thinking about course of action etc etc.
beefsack's comment and yours are surprising. I thought it was fairly intuitive notion, and generally accepted that language provides the basic concept and structure for thoughts. Basically the Saphir-Whorf theory [1]. There surely must be a base layer that doesn't rely on language, but anything most of the time we are handling higher level problems.
This is a theory, but most bi/tri-langual people I talked to experienced some kind of shift in their way of modeling their thought, sometimes relying on a concept only existing in a specific language (that's what makes the reliance on the language obvious).
Yes, it is strange. I am a native German speaker, but my thoughts are strongly dependent on what I am thinking about. As I am reading most of the CS or philosophy books in English they are naturally thought of in English. Family and so on in German. And everything about daily life in Turkish (as I am living right now in Istanbul). On the other hand when I read a French novel my mind is switching completely back to French. Despite the fact that I am aware there should be a layer closer to the metal or irrespective the brain tissue, I can't really think of it without relying well on a language.
> This is done in a language
Why do you believe this?