Character mistake: Pusher says that he read in Scully's files that she had shot Mulder, although after Pusher's visit in the Computer Records Office Skinner says that Pusher checked only Mulder's files. (00:40:15)
Other mistake: The FBI crest outside the main FBI building is incorrect as it has the words UNITED STATES BUREAU OF INVESTIGATION on it instead of FEDERAL BUREAU OF INVESTIGATION.
Continuity mistake: Pusher loads the revolver with one bullet, leaving five chambers empty. When Mulder picks it up and points it at Pusher, the bullet can be seen in the cylinder, just to the right of the gun barrel. Later, when Mulder begins to slowly pull the trigger for the third time (aiming at Scully), we see the cylinder turn to Mulder's left. Problem is, with the bullet situated as it was when Mulder picked it up, the bullet would have moved to the barrel and been fired the first time he pulled the trigger, killing Pusher. Instead, it fires on the third pull.
Hell Money - S3-E19
Revealing mistake: Mulder and Scully are standing behind the torso of a corpse being investigated. Despite being dead, the victim is breathing. (00:17:20)
Other mistake: After AD Skinner is finished being interviewed by the police, Mulder asks him about why he would employ the services of a prostitute. Skinner looks at him in shock and Mulder says "You didn't know she was a prostitute did you?" I find it hard to believe that at no point in the interview did the police not mention to Skinner the dead woman he woke up next to, after spending the night with her, was a prostitute.
Revealing mistake: As Dana Scully is examining the dead woman found in bed with Skinner, she observes a strange luminescent glow on the woman's nose and lips. It's apparent that this glow was added digitally; but the digital effect is "drifting" around the dead woman's face, seemingly out of sync with the video. Similar "drifting" digital effect problems are seen in other X-Files episodes.
Continuity mistake: During the very beginning of the episode when the cop and researcher are talking on the shore they go from facing each other to the cop facing the lake and having to turn his head to talk to the researcher between shots. (00:00:30)
Plot hole: When Mulder and Scully are going to the town/city where the disappearances took place Scully says they should stop so she can walk the dog. Mulder says OK because he has to ask for directions yet the next scene we see is Mulder and Scully interviewing Dr. Faraday. How did they find him if they didn't know where they were?. And after that we see them at a store where they do ask for directions. (00:08:30)
Revealing mistake: In the opening sequence, a man who is hallucinating badly is apprehended by the police. They find a dead blonde woman in the trunk of the man's car. In a close-up of the dead woman, all the dried blood on her face is an added digital effect; however, the dried blood "drifts" around, seemingly out-of-sync with the video. Similar "drifting" digital effect problems are seen in other X-Files episodes.
Other mistake: When Mulder and X are standing outside the Mulders' summer house, we hear that it is raining, but there is no sign of rain on neither of them. (00:17:50)
Visible crew/equipment: While Fox is fighting the agent in the underground garage you see a crew person on the right side of screen for a split second. (00:38:55)
Continuity mistake: In the pre-credits sequence when the gunman is shot by the police officer, he initially clutches a wound on his right side. When he is shown lying down, the bullet wound is higher up and on his left side.
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