The Naked Sun

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Naked Sun cover

Cover for Asimov's The Naked Sun

The Naked Sun is the second novel in Isaac Asimov's Robot series. Like its predecessor, The Caves of Steel, it is a whodunit story, in addition to being science fiction. The book was first published in 1957 after being serialised in Astounding Science Fictiovdsvsvsv and December 1956.

This article, The Naked Sun, contains spoilers. Be forewarned, plot and/or ending details follow.
Asimov says you decide.


Rikaine Delmarre, a prominent "fetologist" (fetal scientist, responsible for the operation of the planetary birthing center remeniscent of those described in Aldous Huxley's Brave New World) of Solaria (a planet politically hostile to Earth), is murdered. Elijah Baley is called in to investigate, at the request of the Solarian government. He is again partnered with R. Daneel Olivaw. Before departing Earth, he is asked by Earth's government to assess the Solarian society for weaknesses.

The book focuses on the unusual traditions and culture of Solarian society. The planet has a rigidly controlled population, and robots outnumber humans twenty-thousand to one. People are strictly taught from birth to despise personal contact. They live on huge estates, either alone or with their spouse only. Communication is done via holographic telepresence (viewing, as opposed to seeing)

Ultimately, we find out that neighbor and fellow robotocist Jothan Leebig was working on a way of subverting the robots' inability to kill humans. This was achieved by understanding a missing word in the Three Laws Of Robotics; "knowingly". He used this knowledge to cause the death of Rikaine at the hands of his wife Gladia, because she was opposed to his plans. Later on, he also manages to poison the "Police investigator" (Until this murder, there had been no need for police on Solaria) using a pair of robots.

The key to this technique is that a robot cannot knowingly kill or knowingly allow a human to come to harm. But if the robot does not know that their actions will cause harm, then they will not be stopped by the Laws.

The future implication of this was pointed out by Elijah, that it can be extended to the point at which robots could be used to fight wars (In the Asimov universe, this would be unthinkable, given the Three Laws).

Leebig kills himself before he can be taken into custody, due to a very Solarian fear of human contact. The irony is that the "human" he was afraid of, was Daneel, a robot.

Despite knowledge of her guilt, Baley never discloses Gladia's role in the murder -- in part because they have established an unfulfilled romantic relationship. He manages to have her sent to the Spacer capital planet of Aurora, where she can further her growth as a human being, something she could never do on Solaria.

After investigating the murder to a satisfactory conclusion, Baley returns to Earth a hero. The information he brings back is invaluable to the government, which while predicting the downfall of Spacer societies; the similarities between the nature of Solarian society and Earth Society in their closed natures suggested a fundamental flaw in the Terran society.

A more thorough description of the after-effects can be found in the sequel to the Naked Sun, The Robots of Dawn.

Isaac Asimov Novels
Robot Series: The Caves of Steel | The Naked Sun | The Robots of Dawn | Robots and Empire
Empire Series: The Stars Like Dust | The Currents of Space | Pebble in the Sky
Foundation Series: Prelude to Foundation | Forward the Foundation | Foundation | Foundation and Empire | Second Foundation | Foundation's Edge | Foundation and Earth

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