You open a box(white triangles as part of box upper lid). Inside the box there is another box. Or it could be several boxes. Inside those boxes there more boxes. The box could be a good one (blue or green), a bad one(yellow, red or black). It depends how you open it. You are going through the numerous boxes until you get to where you started (the white box). That is your life. And all those boxes are a lovely screen that tries to cover up the emptiness of the room.