Mind's Eye - S5-E16
Other mistake: Since the apartment was supposedly "turned inside out and upside down, " as Detective Pennock claims, it would be practically impossible that such an obvious place as the shaving blades container not be dug up thoroughly by the police. (00:12:15)
Mind's Eye - S5-E16
Other mistake: When Marty is being transferred and 'sees' herself because the killer is watching her, she should have seen herself viewed through a wire fence, as the killer was standing behind one.
Other mistake: In the police station, Scully looks twice at a photograph of one of the dead kneeling girls, whose eyes should be burned out in the photograph, but they are normal.
The Pine Bluff Variant - S5-E18
Other mistake: On the information text at The Beginning of the scene telling the viewers where the scene is taking place, it is written as the "First Sovereign Bank of Pennslyvania" in "Harrisburg, Pennslyvania", instead of Pennsylvania, misspelling the name of the state both times.
Other mistake: When Mulder is on his knees in the cafeteria talking to the gunman, there are several shots where you can see the sides of his jacket hanging wide open because of his raised arms, which would make the gun on his belt easily visible to the gunman as he talks to him, but he somehow doesn't see it until he goes to take Mulder's phone.
Other mistake: In order to leave such bloody footprints, CSM must have stepped into the puddle of blood. It is impossible because the guy shot by CSM could not bleed so much blood in such short time, not mentioning that CSM must have intentionally stepped into it. (00:05:20)
Answer: He was being facetious. He doesn't specifically know that information, he was merely giving examples of the types of information he has access to.
I think so too.
lionhead