Revealing mistake: When Max meets Lenny in the coffee shop, there is a McDonald's logo on the cream he opens. In some shots it's visible and others it's covered by white tape.
Pi (1998)
1 revealing mistake - chronological order
Directed by: Darren Aronofsky
Starring: Mark Margolis, Ben Shenkman, Pamela Hart, Sean Gullette
Factual error: Did anyone count the pins on the "superchip" supplied by Lancet-Percy? Four. That's either a telepathic CPU or a very, very fast USB interface.
Maximillian Cohen: 11:15, restate my assumptions: 1. Mathematics is the language of nature. 2. Everything around us can be represented and understood through numbers. 3. If you graph these numbers, patterns emerge. Therefore: There are patterns everywhere in nature.
Trivia: During the second crash, the computer display is flickering with tons of garbage output. Watch carefully and you'll find a hidden message at the bottom of one of the output screens: it reads: "AND JESUS WEPT"