Lukyanenko polemizes with Strugatsky's "World of the Noon". The society of Geometers is crucially based on Upbringing. No families. People are brought up in groups of four by Mentors, who help them to socialize and suppress "wrong" sides of their characters (without any violence, just refusing love). Mentors also help them to recognize the occupation, which is required by the Motherland and which they would like — but Mentors are sure in their right to choose. Mentors don't hesitate to ruin "wrong" dreams of their pupils and have no respect for their personal life. The result is far from World of the Noon, but a society of utter expediency, of people who are brought up averagely — i.e. they fulfil all rules of the society, but are almost unable to violate any (such behaviour is even considered as illness).