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| | Encyclopedia: Science fiction themes (Site not responding. Last check: 2007-10-09) |
 | | A dystopia (alternatively, cacotopia or kakotopia) is a hypothetical society usually portrayed as existing in a future time when the conditions of life are extremely bad due to deprivation, oppression, or terror. |
 | | A post-scarcity economy is a hypothetical form of economy or society, often explored in science fiction, in which valuable things (material, energy or information) are free or practically free, creating abundance. |
 | | See Utopia (disambiguation) for other meanings of this word Utopia, in its most common and general meaning, refers to a hypothetical perfect society. |
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