Publisher's Weekly
A perennial chestnut on old SF television shows involved the handful of humans who, when locked up by aliens puzzling over our aggressiveness, followed their instincts and fought among themselves. That's the kernel of this first SF novel from fantasy writer Kress, who recently won a Nebula Award for one of her SF stories. The Ged are an old, advanced, rational race shocked by the human violence and unpredictability that is erupting in their peaceful galaxy. To better understand their adversary, they choose the isolated, technologically regressed human colony on Qom, where they offer scientific knowledge to two warring nationsbut only if their representatives get along. This becomes the story, then, of the few people whose minds are opened despite the social, political and cultural barriers they inherited. Although the characters and their actions tend to the melodramatic, the background is well drawn and the conceptual breakthroughs are nicely handled.

Library Journal
The warring cultures of Jela and Delysia become subjects of a complex experiment by an alien race who must understand the human race before they can defeat it. As Jelites and Delysians play out their violent natures under constant scrutiny by the inhuman Ged, a Delysian glassblower and a Jelite sister-warrior discover a truth that will force their peoples to work together or die. This heady mix of fantasy and sf explores humanity's infinite capacity for change. Highly recommended. JC