You may have missed a subtlety in my comment. In your grandparent, you said "people's thoughts and words are a byproduct ...". In my comment, I suggested "Thoughts are at one with ...". I didn't mention words.

If we are going to focus on words rather than thoughts, then I am more willing to accept your model. Spoken words are indeed behaviors - behaviors that purport to be accurate reports of thoughts, but probably are not.

Perhaps we should taboo "thought", since we may not be intending the word to designate the same phenomenon.