Cities can be frightening places.The majority of the populaion live in massive tower blocks,noisy,dirty and impersonal.The sense of belonging to a community tends to disappear when you live fifteen floors up.All you can see from your window is sky,or other blocks of flats.Children become aggressive and nervous-cooped up at home all day,with nowhere to play;their mothers feel isolated from the world.Strangely enough,whereas in the past the inhabitants of one street all knew each other,nowadays people on the same floor in tower blocks do not even say hello to each other.