Everything you need to understand or teach Psion by Joan D. Vinge.
Communication is a major theme in Vinge's work. Most often her protagonist is cut off from society and must manage to communicate or face extinction. Most of her protagonists also learn that communication does not invariably make them happy. Cat is no exception. At the start of the novel, Cat is a teen-age junkie well on his way to an early death. Even in Oldcity, a haven for outcasts, Cat is shunned. Because...