The exorcist was a disturbing movie, yes, I will give it that. I've also read the book and found it to be a decent read, though not to my usual taste, and I've heard that both were based on a true story, though probably in the same way that "The Amityville horror" and "Texas chainsaw massacre" are said to be based "on a true story". Those points I'll concede to you, but you presented no argument as to why the Exorcist is, as you put it "one of the most intelligent movies ever".
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