Genetic engineering and conditioning play a pivotal role in maintaining a stable society, where individuals are content to remain in their predestined castes without destabilizing the World State by attempting to climb the social ladder or allowing their emotions to impact their decisions. Each person in the Wold State is divided into five castes, where embryos of the lower three castes (Gamma, Delta, and Epsilon) are cloned during the Bokanovsky Process. The Bokanovsky Process facilitates social stability because the embryos of the lower three castes are weaker and less intelligent than the Alpha and Beta embryos. Since every person is scientifically manufactured in the World State, family units do not exist, which helps prevent genuine emotional attachments and family loyalties.
In the Neo-Pavlovian Conditioning Room, infants are conditioned to hate nature and literature by receiving mild electrical shocks when nurses present them with flowers and books. The scientists of the World State also develop sleep teaching known as hypnopaedia, where a voice recorder whispers into each infant's ear influential messages promoting social stability by accepting one's specific caste. Infants are also conditioned to accept the concept of free love by playing with other infants in the nude. Overall, the World State creates a manufactured society, where every citizen is conditioned to accept their predestined caste and discouraged from forming strong emotional bonds with other citizens in order to maintain a stable, functioning society.