"Use your head, Jill.  We don't know much about Mars but we do know that Mars is very unlike Earth and that Martians, whatever they are, certainly are not human.  Suppose you were suddenly popped into a tribe so far back in the jungle that they had never laid eyes on a white woman.  Would you know all the sophisticated small talk that comes from a lifetime in a culture?  Or would your conversation sound odd?  That's a very mild analogy; the truth in this case is at least forty million miles stranger."