Fatima was the compassionate daughter of the Prophet Mohammed, a maker of miracles. The hand of Fatima is used throughout Tunisia, as well as other North African countries, as a form of superstitious protection, particularly in the form of doorknockers. I saw dozens of them, but this one was memorable because it was as blue as the door behind it. Superstition is rooted in mystery, and so is this image. I loved the play of light and shadow: the hand of the good Fatima is illuminated by the warmth of the sun, while the door itself is left mostly dark, implying the doubts and dangers that go hand in hand (no pun intended) with superstition.