The Wards are open-topped, with skyscrapers rising from the superstructure. Towers are sealed against vacuum, as the breathable atmosphere envelope is only maintained to a height of about seven meters. The atmosphere is contained by the centrifugal force of rotation and a "membrane" of dense, colorless sulphur hexafluoride gas, held in place by carefully managed mass effect fields.

The superstructure evolves more slowly and is more resistant to change than the economic infrastructure, especially in the modern industrial age of advanced capitalism.

Superstructure

Meaning

Noun

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