Stan, Jez's son, was a Next. As a result, the Bergs were approached by Roberta Golding who wanted to take Stan to the Grange to see if he would like to live there while Jez was stuck in the orbital anchor station of the space elevator.
After his visit to the Grange, Stan had changed. He started to preach all around the construction site and started to attract the attention of several people. Because of all the trouble his son steered, Jez didn't want to see him anymore.