description Probability Moon Overview
Probability Moon is a 2000 science fiction novel by Nancy Kress and the first book in the Probability trilogy. It follows human investigators who visit World, an alien planet whose inhabitants share a collective system of beliefs about reality, while political and military pressures complicate the encounter. The novel is suited to readers interested in first contact, social science fiction, military conflict, and the relationship between perception, culture, and objective truth.
help Probability Moon FAQ
Is Probability Moon the first book in a series?
Yes, it opens Nancy Kress's Probability trilogy. The sequels are Probability Sun (2001) and Probability Space (2002).
What is 'shared reality' on the planet World in Probability Moon?
The native inhabitants of World must perceive and believe things consensually; anyone who violates shared reality suffers physical illness the humans translate as 'reality sickness.' Human visitors are initially classified as either sane-but-strange or utterly 'unreal,' which drives much of the novel's tension.
Who are the Fallers in the Probability trilogy?
The Fallers are the alien enemy humanity is at war with during the trilogy. In Probability Moon, that war is the backdrop pressuring a human research team on World, which also has custody of a long-buried alien artifact that may be decisive in the conflict.
Do I need to read the other Probability books to understand Probability Moon?
Probability Moon tells a self-contained story about the human team on World, so it works as an entry point. However, the Faller war and the artifact storyline carry through Probability Sun and Probability Space, published in 2001 and 2002 respectively.
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