Intergalactic travelers are marooned here on earth, and they just put up with being segregated, etc.? That's too much for me to ignore, considering it's supposed to be (I think) in an analogous present time. If they can travel here, they've got the smarts to pretty much whoop our asses, build another space craft, and get the heck outta Dodge.
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YMMV, but me no likey.
Actually, if it makes you feel better. That isn't necessarily true. (i didn't read your spoiler linkee)
The logistics of building a highly technical 'craft' takes an entire societal infrastructure.
Imagine if a current US Aircraft Carrier traveled to 1947. The US Aircraft Carrier would be incredibly advanced and powerful, however, by itself it would not be able to take over the entire planet. It only holds so many fighter jets with so many bullets and missiles right?
It would be entirely possible for the then 1947 World's military to dictate terms to the US Aircraft Carrier with the result being a shakey truce.
Likewise, the engineers on board the US Aircraft Carrier will not be able to simply 'build another' US Aircraft Carrier using the 1947 infrastructure. For a start, microchips aren't even around and it takes BILLIONS of dollars of infrastructure and machines to build a microchip. And that is just 'one' advanced technology. To build an entire Aircraft Carrier takes TRILLIONS of dollars worth of infrastructure.
So aliens stranded here would face the same problems.
And barring the ubiquitous 'force field', we are fairly advanced as warfare is concerned and we're only 50 - 100 yrs away from serious space travel so we aren't too far behind.
Hope that ties up that plot hole for you
Everything I've seen about the movie looks legit and I can't wait to see it.
Mel...