Trivia: If the story in this episode is to be believed, Scully is now completely immortal. Alfred Fellig couldn't die because he had bypassed death - his nurse died in his place. When Scully is all but dead and Fellig grabs death away from her and dies himself, this should leave Scully in the same position as Fellig was before he died - completely immortal.
Trivia: In this episode, if the facts are followed, Scully would live forever because Fennig saw Death instead of her. In the earlier episode "Clyde Bruckman's Final Repose" (the man who can tell when people are going to die), she asks when she is going to die. He says 'you don't.' Maybe Scully really is intended to live forever.
Trivia: According to A. Crowley, the words "Zazas, zazas, nasatanada, zazas" come from some ancient vision: by them Adam was said to have opened the gates of Hell. They are supposed to mean "Open, open, gates of Hell, open" and some claim that it originated in Pagan Europe. (00:18:50)
Trivia: In the power plant scene, a worker walks into the control room, there is a bald man with his feet on the control panel - asleep. His colleague greets him as 'Homer' - obvious reference to Homer J Simpson.
Trivia: Fletcher says that Saddam Hussein is really a man named John Gillnitz. This is a mix of the names of three of the show's producers: John Shiban, Vince Gilligan, and Frank Spotnitz. There is also a character in the episode "Jump the Shark" named John Gillnitz, and a character in the video game, "The X Files: Resist or Serve" named John Gillnitz.
Trivia: "Agua Mala" is a quote from Ernest Hemingway's "The Old Man and the Sea" and means "Bad water" in Spanish.
Answer: As he stated many times throughout the series, Mulder needed Scully to be sober and skeptical. Whenever Scully's skepticism wavered and she started questioning her own rationality, Mulder would try to restore her sense of skepticism, because he needed her to be clear-thinking.
Charles Austin Miller