Erewhon: or, Over the Range (ɛrɛʍɒn) is a novel by English writer Samuel Butler, first published anonymously in 1872, set in a fictional country discovered and explored by the protagonist. The book is a satire on Victorian society.
The first few chapters of the novel dealing with the discovery of Erewhon are in fact based on Butler's own experiences in New Zealand, where, as a young man, he worked as a sheep farmer on Mesopotamia Station for about four years (1860–64), and explored parts of the interior of the South Island and wrote about in his A First Year in Canterbury Settlement (1863).
The novel is one of the first to explore ideas of artificial intelligence, as influenced by Darwin's recently published On the Origin of Species (1859) and the machines developed out of the Industrial Revolution (late 18th to early 19th centuries). Specifically, it concerns itself, in the three-chapter "Book of the Machines", with the potentially dangerous ideas of machine consciousness and self-replicating machines.
The greater part of the book consists of a description of Erewhon. The nature of this nation is intended to be ambiguous. At first glance, Erewhon appears to be a Utopia, yet it soon becomes clear that this is far from the case. Yet for all the failings of Erewhon, it is also clearly not a dystopia, such as that depicted in 1949 in George Orwell's Nineteen Eighty-Four.
As a satirical utopia, Erewhon has sometimes been compared to Gulliver's Travels (1726), a classic novel by Jonathan Swift; the image of Utopia in this latter case also bears strong parallels with the self-view of the British Empire at the time. It can also be compared to the William Morris novel, News from Nowhere (1890).
Erewhon satirises various aspects of Victorian society, including criminal punishment, religion, and anthropocentrism. For example, according to Erewhonian law, offenders are treated as if they were ill, whereas ill people are looked upon as criminals. Another feature of Erewhon is the absence of machines; this is due to the widely shared perception by the Erewhonians that machines are potentially dangerous.