Factual error: When Arnie and Devito are stealing the car and Devito sets off the car alarm, Arnold picks up the car from the back end to stop it. If you watch the wheels you will notice that they don't shake or move at all when Arnold sets the car back down on the ground. (00:27:23)

Twins (1988)
1 factual error - chronological order
Directed by: Ivan Reitman
Starring: Danny DeVito, Arnold Schwarzenegger, Kelly Preston, Chloe Webb
Genres: Comedy
Continuity mistake: In the scene where Danny and Arnold are eating the "nuked" food. You can see the amount of milk Arnold has in his glass changes. He actually has more at the end of the scene. (00:36:36)
Vincent: Women love men who are mysterious and devious, keeps them on their toes, it excites them. You know what I mean?
Julius: No.
Vincent: You do like women?
Julius: Oh, very much so. They're strange and sensitive. They have compassion. I have the highest respect for women.
Vincent: You're a virgin!
Julius: That's private.
Vincent: A 230-pound virgin.
Trivia: In the opening scenes, an uncredited Heather Graham plays the mother of the title characters.
Question: Why did Traven lie to Mary-Ann and tell her that Julius died at birth and that Vincent was never born?
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Answer: Because the offspring of this experiment was meant to be studied, researched. Mary-Ann showed signs of maternal attachment toward the end of her pregnancy, which the scientists involved felt would hinder the experiment due to her not wanting her baby poked and prodded at all day, every day. So she was told her baby died at birth and she was sent on her way. There was no point even mentioning the second baby since she never knew she was carrying twins in the first place.
Phixius ★