I guess Big Foot exists and so does aliens..
OT: I'm no conspiracy theorist, but you'd better believe that aliens do exist, and probably in big bunches. They have to, statistically, even if you don't believe the evidence, which is still way, way more than the evidence of the Big Foot or the Loch Ness Monster, etc.
The majority of them are just different types of organisms like the Earth's animals, plants, bacteria, etc, but a few of them will have become definitely more advanced than humans.
BTW, even for Wilt standards, this thread has become excessively long, with its 255 posts (Deuce Bigalow's "posts" don't count).