Factual error: The part of the film set in the CIA Headquarters is suppose to take place in 1991. However, Robert Redford's character seems to have both a cell phone and a two-way pager that are quite advanced for the early 1990s. Not to mention the fact that cell phones aren't allowed in places like the CIA headquarters, because they aren't secure and they might allow people to eavesdrop on classified conversations.
Factual error: One of the scenes in the movie shows a lovely green bridge in "West Germany". Too bad this bridge actually is the Szabadság Bridge in Budapest, Hungary.
Continuity mistake: In the scene where Muir shows Bishop the pictures that prove Hadley´s connections with the Hezbollah, he reaches into his pocket and he takes out one picture only. Yet when Bischop looks at it on the table there are three nicely aligned pictures.
Continuity mistake: When Nathan and Tom are on the rooftop talking, Nathan gets up to leave and Tom is facing to his left. Camera angle changes to a wide view and he's looking at Nathan but when the camera angle changes to a closer view he is once again looking to his left. Happens about 3 times during the entire scene.
Audio problem: When Harry Duncan calls Muer at his house in the opening of the movie you can see that he is talking on a cellular phone in an elevator, yet when he hangs up (you hear it from Muer's end of the line) you can hear the sound of a phone receiver being slammed down. Cellular phone calls end with a polite little beep, there is nothing that makes a physical noise like that. (00:09:05)
Factual error: In the opening Redford crosses the Arlington Memorial Bridge into DC while driving to the CIA. The CIA is not in DC; it's in Virginia and you would never cross that bridge to get there.
Continuity mistake: In the scene where Redford asks his secretary to hide Pitt's file, justifying his paranoia with a Noah reference, he puts on his jacket and walks toward the door, leaving the collar slightly upturned. The camera goes to her and then back to him, but when it returns, his collar is perfect.
Factual error: The Chinese ambulance Tom uses to escape prison when presumed dead reads 'ambulance' on the side in English instead of Chinese.