Halloween
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Other mistake: At the start of the film, Michael was 6 years old. It's exactly 15 years later when he gets out on Halloween night again which would make him 21. However the ending credits state the two Michaels as 6 and 23. (01:29:00)

Factual error: There's no way that the knife that killed Bob was long enough to go through his body and impale the wall behind him. And a butcher knife cannot "pin" a human body to a wall and just stay put, they aren't strong enough.

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Dr. Wynn: Now, for God's sake, he can't even drive a car.
Loomis: He was doing very well last night! Maybe someone around here gave him lessons.

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Trivia: When they were shooting the scenes for the start of the film (all the ones seen from Michael's POV) they couldn't get the 6-year old child actor until the last day so the movie's producer, Debra Hill, volunteered to be Michael for any scenes where his hands come into view. This is why the nails on young Michael's hands look so well manicured and varnished.

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Question: Why was Michael killing people? There was no mention of his history, or what made him the way he was.

Answer: The only answer given in this film is that Myers is purely and simply evil. He's just doing it because he's compelled to, and doesn't seem to have any trace of humanity left inside of him. Future sequels attempted to give an explanation, but to varying degrees of success. But as far as this original film is concerned - he's just pure evil.

TedStixon

Answer: The movie doesn't require a back story, although subsequent sequels, and the Rob Zombie remake address your questions. Then again, what makes any serial killer kill? The topic has been studied by psychologists for decades. Often serial killers lead normal lives, at least in public.

rswarrior

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