So, when you walk up to a door and you open it, what you compulsively have to do to perceive is to make decisions, thousands of decisions about the size of the room, the walls, the height, the objects in this room.
当你拾阶而上打开一扇门的时候， 你不由自主的 做出判断， 成千上万的判断，诸如房间的大小， 墙壁，高度，房内物体。