Why was Linda segregated and shunned by the rest of the pueblo in Brave New World?

Chapter 8 of Aldous Huxley's Brave New
World is a pivotal chapter as it juxtaposes the "civilized" culture of the
New World against that of the "savage" Reservation.  Stranded after having fallen and
disappeared from the site of the Director who has taken her there, Linda is rescued by
the Indians and must live with them.  In her culture "everyone belongs to everyone
else," so she does not understand the immorality of sleeping with all the men that she
does.  For doing so, the women beat her as she is considered by them as a whore who has
no right to their men.

Furthering the contrast in cultures
is the fact that Linda does not know how to use the weaving machines before she is
ostracized.  Later she cannot mend John's clothes and the other children ridicule him. 
Because of her rejection and isolation, Linda drinks the mescal and tries to escape as
she has done in the New World with
soma .

With the narration of John of
the past experiences he and Linda have had, the contrast in the true values of the
reservation with the manufactured values of the New World that exists in the years of
Ford becomes very apparent.  Clearly, the New World has many
flaws. 

This chapter also serves to foreshadow the
impossibility of John's adjustment to the New World when Bernard takes this "noble
savage" back with him.  The Rousseauian motif cannot be missed here as once exposed to
the New World, the innocent and noble John is sullied and cannot be
happy.