Do Androids Dream of Electric Sheep? (retitled Blade Runner: Do Androids Dream of Electric Sheep? in some later printings) is a science fiction novel by American writer Philip K. Dick, first published in 1968. The novel is set in a post-apocalyptic San Francisco, where Earth's life has been greatly damaged by a nuclear global war. Most animal species are endangered or extinct from extreme radiation poisoning, so that owning an animal is now a sign of status and empathy, an attitude encouraged towards animals. The book served as the primary basis for the 1982 film Blade Runner, and many elements and themes from it were used in its 2017 sequel Blade Runner 2049

The main plot follows Rick Deckard, a bounty hunter who is tasked with "retiring" (i.e. killing) six escaped Nexus-6 model androids, while a secondary plot follows John Isidore, a man of sub-par IQ who aids the fugitive androids. In connection with Deckard's mission, the novel explores the issue of what it is to be human and whether empathy is a purely human ability.

In post-apocalyptic 1992 (2021 in later editions),^[2] following a devastating global war called "World War Terminus", the Earth's radioactively polluted atmosphere leads the United Nations to encourage mass emigrations to off-world colonies to preserve humanity's genetic integrity. Moving away from Earth comes with the incentive of free personal androids: highly advanced robot servants that are practically identical to humans. The characters and text refer to these androids (or "andys") variously as "robots", "machines", and "programmed", but it is later made clear that they are constructed of organic materials so similar to a human's that only a tedious "bone marrow analysis" can independently prove the difference. To save time in identifying incognito androids, various polygraph-style personality tests have been devised.

The Rosen Association manufactures the androids on the colony of Mars, but certain androids violently rebel and escape to the underpopulated Earth where they hope to remain undetected. Despite their realistic appearance and advanced intellect, androids are not treated as equals to humans. They are prohibited from doing many things, including emigrating from the colonies to Earth. Therefore, American and Soviet police departments remain vigilant, keeping bounty-hunting officers on duty to track and "retire" fugitive androids. Similar to the androids, humans with mental disabilities, psychological disorders, or genetic defects, called "specials", are also treated as sub-human; they are forced to remain on Earth and are prohibited from traveling to the colonies.

On Earth, owning real live animals has become a fashionable status symbol, both because mass extinctions have made authentic animals rare and because of the accompanying cultural push for greater empathy. High-status animals such as horses cost far more than low-status animals. However, poor people can only afford realistic-looking robot imitations of live animals. Rick Deckard, for example, owns an electric black-faced sheep. These artificial animals appear and feel identical to real animals, but are described as "electric", having "circuits" and hidden access "control panels", and requiring "repairs". Compared to the android robots, Deckard regards these electric animals as "a kind of vastly inferior robot".

The trend of increased empathy has coincidentally motivated a new technology-based religion called Mercerism, which uses "empathy boxes" to link users simultaneously to a virtual reality of collective suffering, centered on a martyr-like character, Wilbur Mercer, who eternally climbs up a hill while being hit with crashing stones. Acquiring high-status animal pets and linking in to empathy boxes appear to be the only two ways that humans can attain existential fulfillment.

Rick Deckard, a bounty hunter for the San Francisco Police Department, is assigned to "retire" (kill) six androids of the new and highly intelligent Nexus-6 model which have recently escaped from Mars and traveled to Earth.

These androids are capable of extremely realistic behaviors, which make them difficult to detect, but Deckard hopes to earn enough bounty money to buy a live animal to replace his lone electric sheep.

Deckard visits the Rosen Association's headquarters in Seattle to confirm the accuracy of the latest empathy test, which he suspects may not be capable of distinguishing the latest Nexus-6 models from genuine human beings. The test appears to give a false positive on CEO Eldon Rosen's niece, Rachael, meaning the police have potentially been executing human beings. Rosen attempts to blackmail Deckard to get him to drop the case, but Deckard retests Rachael and determines that Rachael is, indeed, an android, which both Rosens ultimately admit.

Deckard soon meets a Soviet police contact who turns out to be one of the Nexus-6 renegades in disguise.

Deckard kills the android, then flies off to kill his next target: an android living in disguise as an opera singer.

Meeting her backstage, Deckard administers the empathy test, but she calls the police.

Failing to recognize Deckard as a bounty hunter, they arrest and detain him at a police station he has never heard of, filled with officers whom he is surprised never to have met.

An official named Garland accuses Deckard himself of being an android with implanted memories.

After a series of mysterious revelations at the station, Deckard ponders the ethical and philosophical questions his line of work raises regarding android intelligence, empathy, and what it means to be human. Garland, pointing a laser gun at Deckard, then reveals that the entire station is a sham, claiming that both he and Phil Resch, the station's resident bounty hunter, are androids. Resch shoots Garland in the head, escaping with Deckard back to the opera singer, whom Resch brutally kills in cold blood when she alludes that he may be an android. Desperate to know the truth, Resch asks Deckard to use the empathy test on him, which confirms that he is actually human, and then Deckard tests himself, discovering that he has a sense of empathy for certain androids.

Deckard buys his wife Iran an authentic Nubian goat with the bounty money. His supervisor then insists that he visit an abandoned apartment building, where the three remaining android fugitives are assumed to be hiding. Experiencing a vision of the prophet-like Mercer confusingly telling him to proceed, despite the immorality of the mission, Deckard calls on Rachael Rosen again, since her knowledge of android psychology may aid his investigation. Rachael declines to help, but reluctantly agrees to meet Deckard at a hotel in exchange for him abandoning the case. At the hotel, she reveals that one of the fugitive androids is the same exact model as herself, meaning that he will have to shoot down an android that looks just like her. Rachael coaxes Deckard into sex, after which they confess their love for one another. However, she reveals she has slept with many bounty hunters, having been programmed to do so in order to dissuade them from their missions. He threatens to kill her, but holds back at the last moment. He leaves for the abandoned apartment building.

Meanwhile, the three remaining Nexus-6 android fugitives plan how they can outwit Deckard.

The building's only other inhabitant, John R. Isidore, a radioactively damaged and intellectually below-average human, attempts to befriend them, but is shocked when they callously torture and mutilate a rare spider he's found.

They all watch a television program which presents definitive evidence that the entire theology of Mercerism is a hoax.

Deckard enters the building, experiencing strange, supernatural premonitions of Mercer notifying him of an ambush.

Since they attack him first, Deckard is legally justified as he shoots down all three androids without testing them beforehand.

Isidore is devastated, and Deckard is soon rewarded for a record number of Nexus-6 kills in a single day.

When Deckard returns home, he finds Iran grieving because Rachael Rosen arrived while he was gone and killed their goat.

Deckard goes to an uninhabited, obliterated region of Oregon to reflect. He climbs a hill and is hit by falling rocks, and realizes this is an experience eerily similar to Mercer's martyrdom. He stumbles abruptly upon what he thinks is a real toad (an animal thought to be extinct) but, when he returns home with it, his wife discovers it is just a robot.

In 1982, Hampton Fancher and David Peoples wrote a loose cinematic adaptation that became the film Blade Runner, featuring several of the novel's characters. It was directed by Ridley Scott. Following the international success of the film,^[3]Future%20Noir%3A%20the%20Making%20of]]the title Blade Runner* was adopted for some later editions of the novel, although the term itself was not used in the original.

As part of their Dangerous Visions dystopia series in 2014, BBC Radio 4 broadcast a two-part adaptation of the novel. It was produced and directed by Sasha Yevtushenko from an adaption by Jonathan Holloway. It stars James Purefoy as Rick Deckard and Jessica Raine as Rachael Rosen.^[4] The episodes were originally broadcast on Sunday 15 June and 22 June 2014.

The novel has been released in audiobook form at least twice. A version was released in 1994 that featured Matthew Modine and Calista Flockhart.

A new audiobook version was released in 2007 by Random House Audio to coincide with the release of Blade Runner: The Final Cut. This version, read by Scott Brick, is unabridged and runs approximately 9.5 hours over eight CDs. This version is a tie-in, using the Blade Runner: The Final Cut film poster and Blade Runner title.^[5]

A stage adaptation of the book, written by Edward Einhorn, ran from November 18 to December 10, 2010, at the 3LD Art & Technology Center in New York^[6] and made its West Coast Premiere on September 13, 2013, playing until October 10 at the Sacred Fools Theater Company in Los Angeles.^[7]

BOOM! Studios published a 24-issue comic book limited series based on Do Androids Dream of Electric Sheep? containing the full text of the novel and illustrated by artist Tony Parker.^[8] The comic garnered a nomination for "Best New Series" from the 2010 Eisner Awards.^[9] In May 2010, BOOM! Studios began serializing an eight-issue prequel subtitled Dust To Dust, written by Chris Roberson and drawn by Robert Adler.^[10] The story takes place in the days immediately after World War Terminus.^[11]

Three novels intended to serve as sequels to both Do Androids Dream of Electric Sheep? and Blade Runner have been published:

These official and authorized sequels were written by Dick's friend K. W. Jeter.^[12] They continue the story of Rick Deckard and attempt to reconcile many of the differences between the novel and the 1982 film.

Critical reception of Do Androids Dream of Electric Sheep? has been overshadowed by the popularity of its 1982 film adaptation, Blade Runner. Of those critics who focus on the novel, several nest it predominantly in the history of Philip K. Dick's body of work. In particular, Dick's 1972 speech "The Human and the Android" is cited in this connection. Jill Galvan^[13] calls attention to the correspondence between Dick's portrayal of the narrative's dystopian, polluted, man-made setting and the description Dick gives in his speech of the increasingly artificial and potentially sentient or "quasi-alive" environment of his present. Summarizing the essential point of Dick's speech, Galvan argues, "[o]nly by recognizing how [technology] has encroached upon our understanding of 'life' can we come to full terms with the technologies we have produced" (414). As a "bildungsroman of the cybernetic age", Galvan maintains, Do Androids Dream of Electric Sheep? follows one person's gradual acceptance of the new reality. Christopher Palmer^[14]Philip%20K.%20Dick%3A%20Exhil]]emphasizes Dick's speech to bring to attention the increasingly dangerous risk of humans becoming "mechanical".^[15] iens and gods".^[14]Philip%20K.%20Dick%3A%20Exhil]]Gregg Rickman^{[[16]](https://openlibrary.org/search?q=Rickman%2C%20Gregg%20%281995%29.%20} [[CITE|16|https://openlibrary.org/search?q=Rickman%2C%20Gregg%20%281995%29.%20%22What%20Is%20This%20Sickness%3F%22%3A%20)We Can Build You Do Androids Dream of Electric Sheep? can be read as a sequel.

In a departure from the tendency among most critics to examine the novel in relation to Dick's other texts, Klaus Benesch^[17] examined Do Androids Dream of Electric Sheep? primarily in connection with Jacques Lacan's essay on the mirror stage. There, Lacan claims that the formation and reassurance of the self depends on the construction of an Other through imagery, beginning with a double as seen in the mirror. The androids, Benesch argues, perform a doubling function similar to the mirror image of the self, but they do this on a social, not individual, scale. Therefore, human anxiety about androids expresses uncertainty about human identity and society. Benesch draws on Kathleen Woodward's^[18] emphasis on the body to illustrate the shape of human anxiety about an android Other. Woodward asserts that the debate over distinctions between human and machine usually fails to acknowledge the presence of the body. "If machines are invariably contrived as technological prostheses that are designed to amplify the physical faculties of the body, they are also built, according to this logic, to outdo, to surpass the human in the sphere of physicality altogether".^[18]