Nothing Important Happened Today (1) - S9-E1
Trivia: When Doggett meets with the Lone Gunmen and their faces are blue, this is a reference to an incident in the series finale of The Lone Gunmen, "All About Yves."
Trivia: The title for this episode is a referring to an episode of Happy Days where Fonzie literally jumps over a shark on a motorbike. It was first used critically in 1985, and is now generally used to suggest a popular or formerly-popular TV show using some sort of gimmick to try and regain some popularity or relevance.
Trivia: Skinner's secretary Arlene that features in this episode is actor Mitch Pillegi's real-life spouse, also named Arlene.
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