What does Josie’s Illness symbolize?

Josie’s illness symbolizes the potential risks of technological advancement. By the end of the novel, it becomes apparent that Josie’s illness is likely a side effect of the ‘lifting’ process. Even when it appears that Josie’s illness will likely kill her, Josie says that she does not regret undergoing the lifting process, although the novel itself may or may not endorse this view.