In Ocean's Eleven there's the following conversation between Linus and Benedict:
Benedict: You new at the commission?
Linus: Been there about two years.
Benedict: I know Hal Lindley over there. You work with him at all?
Linus: Not since he died last year.
How did Linus know about him? He couldn't have guessed. The guy could be fictional, could be someone who never worked there, could be alive. Or even if he died, it could be even last week instead of last year. How did Linus know?