Star City's collapse under contradiction mania
At the South Pole, a steel-works trust builds Star City, a republic under a roof with artificial light, identical buildings, and every detail of life regulated by the trust's council. An epidemic called 'mania contradicens' spreads, and its victims do the opposite of what they intend: they say 'no' when they mean 'yes' and administer harm when they mean to help. Within weeks the city's utilities, order, and social bonds break down into darkness, violence, and orgy, and relief expeditions find mostly corpses.
