Wow, it looks like everyone who choose not to believe it at all picked some of the reasons why it would be hard to believe. or maybe they didn't see all of them, i'll admit that the first two or three episodes did make a lot of sense, but every episode after just made it seem more unbeliveable (a good example would be noah's ark being connected to some type of essence storage device, then using a modern day version to clear it).
The idea that made this really seem believeable to me had to be the events that surrounded noah, since (don't know if true or not) noah was apparantly a testube baby and was created to look more human than the people around him, in that part of the world anyway (for whatever reason the people at that time looked more ape like than a human was supposed to). I don't know if you'll believe it or not from my post, so I would recommend you watch this part and see if it makes sense to you.
Using their theiory on noah, I ended up coming up with a theiory of my own that may or may not sound possible. Basically the idea is that there had to be some kind of force that created humans (whether it's gods or alians), since our very existance makes very little sense. I mean yeah i'm preatty sure that anyone that went to sience class in school can tell you that humans evolved from monkeys, and anyone that spent their whole life in church will tell you that humans are decendents of only two people (and get this their white.....yes apparantly the entire human race decended from a couple of white people.... yeah i'll belive this when the first paragraph from crau's post happens to me
). I'll go with the monkey idea and say this if humans really evolved from monkeys or apes then why do both monkeys and apes still exist today, so I don't know if science is wrong but all the species of animal that evolved from another animal that animal that they evolved from no longer exist. A good example would be there are elephants but not mammoths, their are crocodiles but not T.rexs. Another reason why I think there is force is that for some reason unlike any other animal on the planet humans are the only ones that seem to push away from nature, example being that were not always thinking of survival, so this eleminates ants who also act a lot like us.
okay well, that's it for my theiory I hope it made some sense as to why I think aliens might have something to do with us, and as i've stated before don't just throw the idea out as being complete crap consider the possibility at least.
But, since I don't know the thought process of those not from this world, I can't really make any assumptions. 四番目と思う。 
May I ask what is this Ancient Alien Theory 
