A Complex Message - Part 1

Night is similar in style to Kubrick in that "All the truths to his movies are "hidden" in the movies themselves".

And there sure are a lot of clues in this movie, including "human" issues of faith/coincidence etc, and although Night has these issues "entangle" with the crop circles issues, I will try in this post to separate out the more "physical" issues [and hope that does not actually lead me away from the true meaning].

Night always has a Vehicle for bums on seats, box office success and in this case it is aliens, but as he reveals himself that he uses "Invasion of the Body Snatchers", "Birds" and "War of the Worlds" as the 3 sources of inspiration [apart from the "current world issue" of crop circles], we have to step very carefully before assuming there ARE any real aliens in the movie, especially given the huge strain all those in the story are under.

Further there is the book that we need to "unhide" as a clue from where it is hidden behind the bums on seats red herring of the water glasses [like how devilishly clever is that?].  The book is The Aquitaine Progression by Robert Ludlum, which is an Eyes Wide Shut style story of the so called Illuminati who plan a War of the Worlds cum 9/11 style media assisted terror regime making it easy for "HAL" to rule absolute [and Night goes on to make The Village to show how well it can work].

Then Night ties the word Aquitaine in with Aquaphobia [Hydrophobia] by way of the dogs getting Rabies from "the aliens" - from Wiki:

"The correct Greek-derived term for "water-fear" is hydrophobia, from ὕδωρ (hudōr), "water" and φόβος (phobos), "fear". However, this word has long been used in English to refer specifically to a symptom of later-stage rabies, which manifests itself in humans as difficulty in swallowing, fear when presented with liquids to drink, and an inability to quench one's thirst.
In order to have an unambiguous term to refer to a general phobia about water or drowning, the term "aquaphobia" has been coined, from the Latin word aqua (which normally ought to have the form aqui- when used as a prefix) and the Greek word "phobia"."

So Night ties those clues in with Bo having some strange "thing" about drinking water and dreams, and Graham's revelation of her almost supernatural birth as "an Angel".