Deliberate mistake: There are no yellow/amber lights as Patrick drives Sam and Charlie through the tunnel. Yellow/amber lights are present as soon as drivers enter the tunnel - a warning to slow down, as well as help drivers' eyes to adjust to the light level inside. I presume it was better to have all white lights while filming (and traffic was controlled). (00:27:33)
The Perks of Being a Wallflower (2012)
1 deliberate mistake
Directed by: Stephen Chbosky
Starring: Paul Rudd, Emma Watson, Logan Lerman, Ezra Miller
Factual error: Whenever Charlie, Patrick, and Sam go through the tunnel into the city, you can see "Consol Center" on the road sign. The Pittsburgh Consol Center was built in 2008, but this movie's set in the 90s.
Trivia: Emma Watson Sam said, "[Bob's] still trying to shag that waitress from the Olive Garden." Emma is an English actor, but the movie is a semi-autobiography of writer Steven Chbosky and is set in a suburb of Pittsburgh, 1991-92 school year. "Shag" is NOT (and was not) commonly used in the U.S. to refer to having sex. "Shag" in the U.S. is more commonly known as referring to a type of carpet, haircut, or dancing. (00:12:13)