Continuity mistake: In the close-up shot of Mulder just before he shoots Barnett, his black ear piece disappears. (00:42:15)
Continuity mistake: At The Beginning when a man says: "We're not who we are", he says it differently when Scully watches the tape. (00:01:20)
Born Again - S1-E22
Continuity mistake: When Scully is doing the exam on the dead guy on table, he blinks and breathes. (00:12:05)
Continuity mistake: When they find the felled ancient tree, the stump that Mulder clambers up onto to investigate the growth rings has a distinctive crack at the center and the growth rings are irregular in shape. However the stump that we get a close up of has no crack and regular circular rings. (00:18:20)
Revealing mistake: When Mulder is examining the residue on the mouth of the deceased man in The Beginning, the dead body's right eye twitches.
Continuity mistake: Mulder says that his sister “just disappeared from her bed one night” which is not true, because later visualizations of that moment show that Samantha was abducted while she and Mulder were playing a game and watching TV. (00:26:30)
Other mistake: When Mulder and Scully are first visiting Darlene Morris, there is a split-second shot of Mulder examining residue on his fingers that is edited in between Mulder and Scully ascending the steps to the porch and knocking on the door. It's as if the sequence was initially longer with Mulder discovering a suspicious substance before he and Scully knocked on the door that was not completely edited out. Note: this mistake may only appear on certain formats. At the time this mistake was originally posted, I spotted it on Netflix. However, it does not occur on my DVD, nor Hulu. (00:07:20)
Visible crew/equipment: In the scene at the very beginning of the episode, when the camera is going up the stairs, you can make out a man's reflection holding a camera on the stairs.
Continuity mistake: When Colonel Belt is going to bed after the press conference, the bottle on his side table moves between shots. (00:25:50)
Miracle Man - S1-E18
Continuity mistake: In the establishing shot of the courthouse the subtitle reads "Kenwood County Courthouse" but you can read on the building that it is the "DeKalb County Courthouse". (00:15:15)
Continuity mistake: When Mulder and Scully are going to the caravan for the first time, you can see a person walking in the background, but when the shot changes they are no longer there. (00:17:05)
Continuity mistake: We see Cindy and Teena at the table talking with Eve 7, drinking out of paper cups. Later on, when Mulder picks up a cup from the table, it's made of glass. (00:30:40 - 00:34:30)
Continuity mistake: When Max is trying to escape through Mulder's window, in the first shot, the bottom window is halfway down, but in the next shot, it's fully up. (00:15:35)
Continuity mistake: After Mulder has been released from the containment cell, and he and Scully go back to his room, the items on the table change position in between shots. (00:15:00)
Character mistake: When Mulder and Scully are in the graveyard, the headstone says "Howard Patrick Graves", but the newspaper said his middle name was Thomas.
Continuity mistake: When Dr. Kendrick/Eve is talking to the two little girls and she's clearing up the mess on the table, the position of the straw changes between shots. (00:29:55)
Continuity mistake: In the scene at the start, when the police car passes the truck, clearly it is daylight, but right after the truck shuts down it is completely dark. (00:03:25)
Factual error: At the crime scene where Roland killed one of the professors by dunking his head in liquid nitrogen and dropped him on the floor, someone has drawn an outline of the dead prof's body and all the bits his head broke into when Roland dropped him. This outline-drawing doesn't happen in life because it interferes with the crime scene, it's a popular myth.
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