The closing scene from Three Days of the Condor.
Higgins: Hey, Turner! How do you know they'll print it? You can take a walk. But how far if they don't print it?Joe Turner: They'll print it.
Higgins: How do you know?
-PJ
I just watched that movie again for the umpteeth time. I thought the same thing after the last freeze frame of Redford looking back.
The 70s IMHO were the Golden Age of film.