Other mistake: When Jerry Lamana goes up in the elevator in the Eurisko building, the "thirteen floor" message is missing. (00:20:55)
Other mistake: Padget hands over one page of his book to his imagined character who is invisible to anyone else except him. Therefore, the page should hover in the air for an external observer. However, Scully watches his apartment on a monitor and notices nothing strange. (00:38:05)
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