The Social Meaning of Sky Bridges

I have a general sense that Sky Bridges are often used in fictional architecture to emphasize exactly this kind of theme you were just talking about. It was sort of people living in elevated tubes of privilege that disconnect them from the realities below. But I'm not sure how accurate my memory that the city in Metropolis is full of Sky Bridges is. Nevertheless, for some reason I had that impression, there certainly are these elevated rail lines going between skyscraper tops.