Whats up with Norris clutching at his chest?
According to the script and book, Norris has an incipient heart condition that everyone knows about. This is backed up by Carpenter’s statement on the audio commentary on the Collector’s DVD, wherein he states in the first moments of Norris’s discomfort that they are “establishing Norris’s heart condition.” To further this point, it is a fact that those who are stationed in the Antarctic undergo considerable physical examination, and it is highly unlikely that someone with a heart condition would be allowed the assignment without all his comrades knowing about it. Another theory that has gone around is that the chest-clutching was the result of Norris being in the final stages of assimilation. This seems to be based on the idea that Norris was not the first assimilated, that there is no heart condition, and that a Norris-thing would have no reason to “fake” a heart condition when nobody is around to see. This simply doesn’t hold up to the available facts, especially when considering th