Picture a large stained glass window inside a cathedral. You see a variety of colours – perhaps a contrast of red and blue, long slivers of yellow, or a striking sea of white. A pattern emerges, changing your interpretation of the window. At first you notice a figure in the centre of the window, which you perceive to be the image of Christ. Then more figures emerge, so you begin to piece together a narrative, reading the window as you would a novel. Now you are lost in the story, in the intricacies of light and colour, in private thought and reverie.