Continuity mistake: When Tooms walks out of the courtroom, the doctor and the old lady who were sitting in The Beginning of the corridor are missing. (00:11:45)
Other mistake: Being chased by Tooms Underneath the escalator, Mulder climbs out of the manhole in front of the escalator, and hits the switch to activate the escalator. Tooms is then being dragged away from the manhole, but the direction of movement of the escalator below the floor would actually have dragged him towards the manhole where Mulder and Scully are.
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