The interstellar war against the race of "Fallers" is growing more and more dire and desperate and humankind is the one on the losing end. There may still be a hope though - an ancient artifact, relict of a long gone supercivilization, orbiting a seemingly primitive planet at the very edge of the galaxy. But the artifact ain't what it seems to be and once Terrans find out what it is, nothing is the same anymore.
Probability Moon is a 2000 science fiction novel by the American writer Nancy Kress. The novel concerns a xenological expedition to the planet World, where aliens live who have developed a strange form of telepathy or collective unconscious, "shared reality", which causes piercing "head-pain" whenever "Worlders" attempt to hold strongly differing opinions. Simultaneously, an artificial satellite is found in orbit of the planet which has uncharted powers, and may be the key to winning a war against a xenocidal alien race, the "Fallers".
Probability Moon contains examples of the following tropes:
- Telepathy: The natives of the World run on strange form of telepathy/collective unconscious dubbed "shared reality". It causes them strong headache whenever in presence of someone holding opinions contrary to the majority or even not knowing something, which is considered common knowledge.
