In the words of the Houghton Mifflin Canadian dictionary, deviation is defined as "an abnormality, a departure". David Strorm, the protagonist in the novel The Crysalids written by John Wyndham, lives in a community that scarfs out against all types of deviation abnormalities.
The reader notices Joseph Strorm (David's father) uses his occupation as an advantage to destroy and abominate all type of human alteration. For instance, Joseph used his substantially moral mind to deny the request of David's aunty Harriet to trade babies to get the needed certificate, "She's a lovely baby-except for that. She is, isn't she?" (pg. 70) As a result Harriet and the baby had committed self annihilation. Not only were deviations left out they were also sent away an sometimes killed.
Normality was so important to the group of Waknuk that the mutant figures were sent to the fringes where food, shelter and safety were scarce.
When David and his telepathic friends become discovered they have no choice but to run from Waknuk to the fringes where they will not be chased after. "There's one thing," he went on, "we must leave tonight, to the Fringes." (pg. 119) Being normal was really the only thing that made you a person in Waknuk.
A conclusion must be made. In the time of David's living being normal was really important, until they landed in a community of Sealand, where the were treated as adequate humans. It was that of David Strorm who brought apart and destroyed discrimination against all types of devotional abnormalities.