Factual error: When the jury first enters the deliberation room, there's a newspaper on the table that at least two of the jurors look through. Jurors are not allowed newspapers during deliberations.
12 Angry Men (1957)
1 factual error - chronological order
Directed by: Sidney Lumet
Starring: Henry Fonda, Martin Balsam, Lee J. Cobb, John Fiedler, Jack Klugman, E.G. Marshall
Visible crew/equipment: In the scene where Henry Fonda is recreating the testimony of the old man getting out of bed & walking down a hall, you can clearly see a shadow of the camera on the floor.
Juror #6: You think he's not guilty, huh?
Juror #8: I don't know. It's possible.
Trivia: This was the only film ever produced by Henry Fonda. The work of both acting and producing was so demanding that he said afterwards that he would never produce another film.
Question: Did they ever look at the hole in his pocket that the knife supposedly slipped out of?
Answer: We have to assume that there was a hole in his pocket; we don't see it, but if the jurors are talking about it as a given fact, then it is likely that they checked it during the trial. However, it does not prove anything. It is easy to rip a hole in a pocket to produce an alibi. Also, it does not lower the extreme unlikeliness that someone else with another but similar looking knife stepped into the boy's apartment at around the same time he lost it. "One in a million," one juror said, and it was not really disputed. No. 8 gave his typical but meaningless "it is possible." Still, they went for an acquittal with these high odds against the boy.
Answer: If you're referring to the jurors, no. We see the entirety of their deliberations. If you're referring to the prosecution or defense, that is unknown. Given, however, that none of the jurors brought up the question, it's likely there was at least a check of his clothes to verify he had a hole in his pocket.
Given how easy it would be to simply tear a hole as an excuse, even if it was there, it wouldn't be much in the way of corroboration.
LorgSkyegon