Aliens

I think if one is intellectually honest, one has to admit to the possibility of mistakes. That said, the fact that our theories make predictions which match reality to a frightening degree implies that there is at least some level of truth to them. Would you agree with this?

I would. The problem is, we stand around making theories to things we can't ever prove. Unless we find a way to make more existence (create our own Big Bang) then it will always just be a theory.
The point I'm going for is, Aliens might be able to travel WAY faster than we can comprehend at the moment, and thus, be here in a few seconds, and back on the other side of the Triverse (it got bigger since my last post) in a few more seconds.