A utopia is a literary form that features an idealistic imaginary society. In most cases, these ideals are unattainable. The author writes about this imaginary place not because he or she hopes to achieve this ideal but because the author hopes to inspire debate about the issues expressed in the work and so bring about social change. In Science Fiction, writers have in turn commented on the unattainable quality of utopias by writing dystopias—visions of a future society that, in striving to achieve an ideal, instead becomes a nightmare. The two most famous Science Fiction examples of dystopias are Huxley's Brave New World and Orwell's 1984.