When Hillary is explaining the 1974 Arecibo message sent by Carl Sagan to Outer Space in an effort to contact alien civilizations, she mentions it contained a list of the elements in human DNA, including carbon, nitrogen, oxygen and hydrogen, but when she notes the return message received from the M13 cluster, she says the alien's list of elements includes "silicone" (she meant to say silicon), a flub left in the final release print with its obvious unintended relevance re: the cast's breast enlargements.