Situation: I am picking up my backpack and there is a bookshelf behind me.
Alternative situations: I am taking off the backpack off the chair so I can sit on it and use the desk that is on my right. I am picking up my blue back pack on the chair in front of me with my right arm hand so I can place it on my shoulder.
Question: What would happen to the glass of the window if I take a bat to it?