Learning about how Az died introduces Tally to the consequences of trying to control others’ thoughts. Now, being a loyal friend means that Tally must take matters into her own hands with Maddy and David’s help. Dr. Cable is clearly cast as an evil person, and it’s imperative that Tally not give into the draw of reacting in kind. In this sense, individuality and being in control of her own mind might be difficult, but it gives Tally more freedom than she ever thought possible—both to dictate her own path as well as to help others.