The Polises
Humanity began transferring itself into the polises (the Introdus) in the late 21st century UT.
Many polises exist, though the novel mentions only a few. Though the author does not go into any great detail about them in a physical sense, they apparently exist as hardware-based supercomputers of unknown size and computational ability, all probably hidden in safe places. Konishi polis, at least, lies buried deep beneath the Siberian tundra.
Each polis has its own unique character, encapsulated in a "charter" which defines its goals, philosophies, and attitudes to other polises and to the external world. "Society" expects citizens to heed the charter of the polis they "live" in; should they begin to disagree with the charter, they can always migrate to a polis which appears more amenable to them.
The most prominent differences between the various polises, at least in the novel, involves their attitudes toward the physical world. Polis societies range from those who wish to experience the real world of normal time and space to the wholly solipsistic who live their entire lives in esoteric, isolated virtuality.
The citizens of Konishi polis seem to concern themselves mostly with abstract mathematics and esoteric philosophical pursuits, and generally show little interest in the physical world. They use visual icons for social purposes, but regard simulated physical interaction as a violation of individual autonomy.
After the Lacerta Event, Yatima emigrates from Konishi to Carter-Zimmerman polis, which rejects the solipsism exemplified by Konishi and embraces the study of the physical universe as of paramount importance. Given the Lacerta Event, which suggests that the universe has the capability of unleashing unknown extreme dangers, Yatima has begun to share this viewpoint.
Read more about this topic: Diaspora (novel)