Other mistake: When Al Pacino reads the magazine (Grazia) with the news of Maurizio's wedding, the article is probably a reproduction (with the actors' picture in place of the actual Maurizio and Patrizia) of a news story about the actual wedding, so the details conflict entirely with the fabricated story. You can easily read (in Italian of course) that they met in 1971 (1978 in this movie), there are over 500 guests to the wedding (much more of a private affair here) and Maurizio had to ask some of his friends to introduce Patrizia to him and asked her out, which is the opposite of what happens here. (00:28:40)
Other mistake: It isn't clear if the poster of the Solar System outside the school was cut off on the right, showing half of Neptune, or if the ninth planet at the time (Pluto) was accidentally omitted. IF the poster was supposed to be complete, its exclusion of Pluto would be an error for the time period (1969) because Pluto was not downgraded to a "dwarf planet" until 2006. Perhaps, only half of Neptune was shown in order to not have to address the changed status of Pluto, making this a deliberate mistake. (00:32:36)
Suggested correction: Neptune isn't cut off, it shows as a complete circle on the "poster" (looks more like a board).
Other mistake: When Zoe Levenson first looks out the window from the spaceship, the earth is from the bottom moving towards the top, this is opposite to the ship spinning direction, which can be determined by the direction of the gravity. (00:12:50)
Other mistake: James supposedly did not give his name when he filed a complaint against Dr. Clark, which would make conducting an investigation to determine if the complaint was valid very difficult. Dr. Clark would be entitled to due process (presumption of innocence) and it is highly unlikely that the Medical Commission would have taken such quick and drastic measures against Dr. Clark under the circumstances.
Other mistake: "Boogie" was a HS student who didn't work and lived with his financially strained (heavily in debt) parents. The Chin family was receiving past-due notices for various bills. The IRS also sent a letter of intent to levy or seize their property if they did not immediately pay $4,513.29. But Boogie had money to buy marijuana, go out to dinner with his girlfriend, go to a gym, and visit a fortune teller - each multiple times. His mother also ate out and saw a fortune teller. With what money? (00:10:20 - 00:28:57)
Other mistake: Packie arrived at Frank's garage on a bicycle, wearing a brown coat, hat, gray hooded sweatshirt, patterned shirt, and a T-shirt. Swaino arrived on a motorcycle, wearing a tight jacket, no hat, black gloves, and black jogging jacket with white trim. When they were outside by the grill, they had large sweaters over their coats. It isn't known where these sweaters came from. It can be assumed the blanket Swaino used at first was from Frank's garage, but the sweaters did not appear to be Frank's. (00:25:32 - 00:37:35)
Other mistake: Tom told David and Lily, "Whoever murdered that girl [Jessica] didn't have sex with her. They used a corn cob." The crime scene photo of the "corn cob" actually showed a partially opened "husk of corn" or "ear of corn." The "cob" is the inner part of the ear beneath the kernels of corn and could more realistically be used to "assault" someone. (00:33:30 - 00:38:30)
Other mistake: Right before the "Y" in the road, it could be seen that Richard's speedometer was pointing to the far left, indicating that he was driving at a low speed, such as 5 - 10 MPH. When Richard was looking at the damage to the car, he said, "Smashed headlights, smashed bumper. Must have been going at a fair clip." The damage to the car, as well as Driss' death from the impact, seem severe at such a low speed. (00:07:40 - 00:16:09)