Factual error: When Dodge and Lexie are in the building running from the police, you see an exit sign. This movie is set in the 1920's, before exit signs were invented.
Factual error: There are Velcro straps holding the pads on the blocking sled, and there is an end zone goal post with one base. Both of these items did not exist until the late 60s.
Factual error: The basketball rims used in the movie are of the modern basketball era with "breakaway" rims. Such a rim was not used until after 1979, when Darryl Dawkins broke his first backboard in a game against the Kansas City Kings in November 1979.
Factual error: In the first scene, the math problem is wrong. It says "Grave buys a bag of 240 jellybeans. There are 35 yellow ones, 52 red ones, 63 green ones, 26 white ones, 41 blue ones, and 40 black ones." That is 257 jellybeans not 240. Don't ask why I stopped and did that math.
Factual error: There is an ostrich that releases an egg on to his plate, however the bird is a male as females are brown and this one was not.