Trivia: This episode is named after Gillian Anderson's daughter, Piper Maru Anderson.
Trivia: Pusher tells Skinner, "Take a walk, Mel Cooley." Mel Cooley is a character played by Richard Deacon in The Dick Van Dyke Show, who is very similar in external appearance to Skinner. (00:23:05)
Trivia: "Talitha cumi!" means "Little girl, I say to you, arise!" in Aramaic. These are the words of Jesus when he resurrected a dead Jairus' daughter (Gospel of Mark 5, 21 - 24 and 35 - 43).
Trivia: The dog that can be seen with the people in the background as Mulder and Scully enter the mine appears to be David Duchovny (Mulder)'s dog, Blue. Blue was beloved by Duchovny and was with him on set through most of the original run of the show. Blue was the daughter of the dog featured in season 1 episode "Ice". (00:16:09)
Trivia: The Smoking Man says to Jeremiah Smith: "Anyone who can appease a man's conscience can take his freedom away from him." This is a quote from "The Grand Inquisitor" by Fyodor Dostoyevsky. (00:30:52)
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