Yes physiodude you will understand that it is not easy to explain when the background understanding behind VASA concept is 180 degree opposite (this was told to me by my Wikipedia reference-linkbobath teacher in switzerland) to the traditional BOBATH thinking. I do not blame you to compare it with BOBATH as it does happen that you try to fit things in the facts known to you earlier

You will also understand that it is not easy to express when I do not know the background experience of therapist asking question.

I shall begin in short that stroke makes one whole integral self divide as if there is a "functional divorce" between two sides of the body. Saga of the chain of events and all the consequences that follow are founded on the base that the physical body got to remain physically united.

Brief short answers will come to you with every apt question from any body.
Little backgrond of the questioner will be appreciated.