The Sixth Extinction (2) - S7-E1
Continuity mistake: From The Beginning of the episode Scully has loose strands of hair on both sides of her head, but when she turns off the lamp and is attacked by locusts, her hair is perfectly combed. (00:02:35)

The Sixth Extinction (2) - S7-E1
Continuity mistake: Mulder writes Kritschgau's name on the ulnar side of the palm of Skinner's right hand. Later when Skinner is looking for Kritschgau in his apartment building, the writing is on a different part of Skinner's palm, beginning around the middle and extending diagonally towards the thumb. (00:11:50 - 00:15:30)
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