Now there is even a second-generation of primitives, those who have known no life other than that of their tribe . Some of them are forming the basis for the future continuation of their tribes, while others, like youth everywhere, rebel against the ideals of their parents and want to learn more about the society that they have never been allowed to be part of . They are drawn back into the places and ideas that their parents rejected . Some return to their tribes shaken by what they have seen while others find new lives in the outside world and are never heard from again .