http://en.wikipedia.org/wiki/The_ChrysalidsThe decay of social behaviour. During a transition period, "gifted" individuals would be first seen as a novelty, then contained as a threat to the status quo, creating fugitives who would cluster into their own collectives, constantly under threat from those outside of their abilities. Battles would be fought between those that have and those that have not the ability until one side dominates. New social behaviour would be established, favoring the dominate side.