What other movies would you choose to find clues in it?
I think the theorists who gave their opinions in the documentary are full of crap, specially the one with the stupid Moon hoax theory. But I realize that if we look closely at anything, we'll always find things that we can connect to one another and see patterns where there are actually none. That's how a paranoid's mind works. I'm a little paranoid myself (but not of the common type. I have my very personal and idyossincratic paranoias. I don't follow other peoples' paranoid set of beliefs) so I can relate to the paranoid mindset.
I could choose to watch and examine The Birds and link it to 9/11. I'd probably find patterns if I look attentively and connect the dots to make it look like there wasn't any other possible explanations, excluding everything that wouldn't confirm my bias.
That's how people find Astrology to work for them. They see the coincidences and selectively ignore all the things that denies their belief.
What if my problem isn't that I don't understand people but that I don't like them?