Continuity mistake: While hugging detective White, in the first shot Mulder's tie covers his shirt's collar, but in the next shots the tie is hidden under the collar. (00:26:10)
Continuity mistake: The glass in the picture of Ryan Reynolds cracks as the casket is starting to catch fire. In one shot, which is wider, the glass has fixed itself. Cut to a closeup, the glass is broken again.
Continuity mistake: When Scully and Mulder first visit John Mostow he says that he drew all the pictures of Gargoyles, which would have been a pretty good act considering he was in a strait jacket and would not have been allowed to have paper and drawing materials anyway. (00:07:30)
Continuity mistake: When Mulder tells Krycek to go to the bathroom and clean off, in the front shot Krycek holds his right hand raised, while in the back shot his right hand is lowered. (00:42:10)
Continuity mistake: When Skinner walks into the cafe (the time he gets shot) another man is just walking out, leaving a table with a used glass and coffee cup. The waitress is in the back, getting Skinner a cup of coffee (she couldn't have cleaned the other table yet), but when we look over Skinner's shoulder you can see that the other table is cleared and has a clean coffee cup (turned upside down) on it.
Continuity mistake: After the crash Mulder rests his head on the passenger dashboard, however in the previous shot filmed from the outside he keeps it on the headrest. (00:08:30)
Continuity mistake: Mulder recalls to Scully that he saw Krycek being pulled out of the car and then saw the bright flash, but he only came to just in time to see the flash. (00:08:50 - 00:12:00)
Continuity mistake: Agent Frank Burst screams "Stop!", but in the previous shot the police car was already stopped, although deputy Scott Kerber has just pushed the accelerator. (00:03:30)
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.
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)
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: 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