Rachel and Beth’s parents communicate frankly but lovingly about Beth’s special needs with their other children. This shows that they are committed to helping Beth live as full and meaningful a life as non-disabled people, and they want their other children to commit to the same. Importantly, during Rachel and Beth’s childhood (in the mid-20th century), most developmentally disabled people
were confined to institutions and deprived of their autonomy. Moreover, “mentally retarded” was an accepted scientific term and not yet a derogatory slur. By encouraging their children not to use the word, Rachel and Beth’s parents were simply trying to prevent Beth from worrying about the fundamental difference between her abilities and other kids’.