I really thought that Dieter was more disposable than John's newfound girlfriend. However, I'm impressed by the author's ingenuity, and am somewhat relieved, despite how much I had begun to like her before her sudden termination.

Most impressively was how much less sapien Clea's psychology was. It indeed demonstrated how arrogant Serena was, despite how much further removed from humanity's her childhood was, in comparison to Clea's.