Stranger In Paradise (short story)
Encyclopedia
Stranger in Paradise is a science fiction
Science fiction
Science fiction is a genre of fiction dealing with imaginary but more or less plausible content such as future settings, futuristic science and technology, space travel, aliens, and paranormal abilities...

 short story
Short story
A short story is a work of fiction that is usually written in prose, often in narrative format. This format tends to be more pointed than longer works of fiction, such as novellas and novels. Short story definitions based on length differ somewhat, even among professional writers, in part because...

 by Isaac Asimov
Isaac Asimov
Isaac Asimov was an American author and professor of biochemistry at Boston University, best known for his works of science fiction and for his popular science books. Asimov was one of the most prolific writers of all time, having written or edited more than 500 books and an estimated 90,000...

. It was written in the summer of 1973 for an anthology of original stories edited by Judy-Lynn del Rey
Judy-Lynn del Rey
Judy-Lynn del Rey née Benjamin was a science fiction editor.Born with dwarfism, she was a fan and regular attendee at science fiction conventions and worked her way up the publishing ladder, starting with work at the science fiction magazine Galaxy.Judy-Lynn was friends with Lester del Rey and...

, but was rejected by her. It was also rejected by Ben Bova
Ben Bova
Benjamin William Bova is an American science-fiction author and editor. He is the recipient of six Hugo Awards for Best Professional Editor for his work at Analog Science Fiction in the 1970's.-Personal life:...

 for Analog Science Fiction and Fact
Analog Science Fiction and Fact
Analog Science Fiction and Fact is an American science fiction magazine. As of 2011, it is the longest running continuously published magazine of that genre...

before being accepted for If
If (magazine)
If was an American science fiction magazine launched in March 1952 by Quinn Publications, owned by James L. Quinn. Quinn hired Paul W. Fairman to be the first editor, but early circulation figures were disappointing, and Quinn fired Fairman after only three issues. Quinn then took over the...

magazine, where it appeared in the May-June 1974 issue. The story was reprinted in the collections The Bicentennial Man and Other Stories
The Bicentennial Man and Other Stories
The Bicentennial Man and Other Stories is a science fiction anthology written and edited by Isaac Asimov . Following the usual form for Asimov collections, it consists of eleven short stories and a poem surrounded by commentary describing how each came to be written...

(1976) and The Complete Robot
The Complete Robot
The Complete Robot is a collection of 31 science fiction short stories by Isaac Asimov written between 1939 and 1977. Most of the stories had been previously collected in the books I, Robot and The Rest of the Robots, while four stories had previously been uncollected and the rest had been...

(1982).

Plot summary

Anthony Smith and William Anti-Aut are full brothers who live in a post-catastrophe world where, due to concerns about humanity's limited genetic diversity
Genetic diversity
Genetic diversity, the level of biodiversity, refers to the total number of genetic characteristics in the genetic makeup of a species. It is distinguished from genetic variability, which describes the tendency of genetic characteristics to vary....

, full siblings are rare (and identical twin
Twin
A twin is one of two offspring produced in the same pregnancy. Twins can either be monozygotic , meaning that they develop from one zygote that splits and forms two embryos, or dizygotic because they develop from two separate eggs that are fertilized by two separate sperm.In contrast, a fetus...

s are nonexistent). Not only are they full brothers, they also look alike, which is totally unheard of.

William pursues a career in genetic engineering
Genetic engineering
Genetic engineering, also called genetic modification, is the direct human manipulation of an organism's genome using modern DNA technology. It involves the introduction of foreign DNA or synthetic genes into the organism of interest...

, referred to as homology, and has been trying to understand and cure Autism
Autism
Autism is a disorder of neural development characterized by impaired social interaction and communication, and by restricted and repetitive behavior. These signs all begin before a child is three years old. Autism affects information processing in the brain by altering how nerve cells and their...

, hence his chosen surname. Anthony has gone into telemetrics, and is working on the Mercury Project, the purpose of which is to send a robot to Mercury
Mercury (planet)
Mercury is the innermost and smallest planet in the Solar System, orbiting the Sun once every 87.969 Earth days. The orbit of Mercury has the highest eccentricity of all the Solar System planets, and it has the smallest axial tilt. It completes three rotations about its axis for every two orbits...

. This is a problem because the positronic brain
Positronic brain
A positronic brain is a fictional technological device, originally conceived by science fiction writer Isaac Asimov. Its role is to serve as a central computer for a robot, and, in some unspecified way, to provide it with a form of consciousness recognizable to humans...

 at the time is not yet adapted to such an environment, so a computer on Earth
Earth
Earth is the third planet from the Sun, and the densest and fifth-largest of the eight planets in the Solar System. It is also the largest of the Solar System's four terrestrial planets...

 must direct the robot. However, the speed of light
Speed of light
The speed of light in vacuum, usually denoted by c, is a physical constant important in many areas of physics. Its value is 299,792,458 metres per second, a figure that is exact since the length of the metre is defined from this constant and the international standard for time...

 communications lag between Earth and Mercury can last up to twenty-two minutes, making computer control difficult. Anthony attempts to solve this problem by recruiting a homologist that can design a positronic brain that resembles a human brain. The leading homologist in this area is his brother William, and much to their mutual embarrassment, the two wind up working together.

William struggles to help form the brain, but when the robot is tested in Arizona
Arizona
Arizona ; is a state located in the southwestern region of the United States. It is also part of the western United States and the mountain west. The capital and largest city is Phoenix...

, it is terribly clumsy. Anthony sees no hope in the robot, but William argues that it was designed for the environment of Mercury, not Arizona. When the robot is sent to Mercury, it operates smoothly, and the project is a success. The solution, William realized, was to use an autistic human rather than a computer to direct the robot. The story ends with William and Anthony befriending each other after being so long separated.
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