PTA movies are generally narreted by visuals. He likes to use the screen as his canvas. So generally its a personal journey like seeing a real art piece. For exapmle if you see a bird in a oil painting and consider it as a bird drawn by artist but for a troubled soul it can resemble as an encapsulation of freedom. I think he is one of the best directors that can be considered creating true art. So its normal that you feel like you dont understand them.