http://en.wikipedia.org/wiki/Janus basically the Division Bell is *Janis* or so thought to believed in reverse. David Gilmore aswell, the Floyd in general is formed around mythology, human nature and such. The god Janus was usually depicted with two heads looking in opposite directions. According to a legend, he had received from the God Saturn, in reward for the hospitality received, the gift to see both future and past. In general, Janus was the patron of concrete and abstract beginnings, but you can see the similarities, though Pinks *God* faces in the same direction..
