Medical students are taught - "When you hear the sound of hooves, think horses, not zebras." 'Horses' are common ailments, 'zebras' are rare diseases. is a zebra. The problem is that doctors have forgotten that zebras DO exist.
"Though this picture is simple. I have done black and white photography for many years and my favorite element of design is contrast. The contrast in this photo takes it from simple to interesting." I think this a fine example of contrast/black and white.