In Profile

I sat down on a bench to take a rest after seeing the Marcel Duchamp exhibit.  My camera was at my side as it always is.  There was some kind of group listening to a docent explaining something about the exhibit.  I saw this mother and her son at the back of the group and I was taken with their profiles.  I can't explain it exactly but this was clearly a photograph.  I shot about 8 frames as they moved around and chose this one as the best.  I really like this photograph for some reason that I can't explain.