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In page Law of Jante:

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Sandemose's novel described working-class life in the fictional town of Jante. He wrote in 1955, a bit mischievously, that "Many people have recognized [in Jante] their own hometown - this has happened regularly to people from Arendal [Norway], Tromsø [Norway] and Viborg [Denmark]".[1] Sandemose made no claim to having invented the rules; he simply sought to formulate social norms that had stamped the Danish and Norwegian psyches for centuries.