According to the big-hair man:
The aliens assisted the Egyptians by providing them with magnetic machines that allowed them to move stones weighing several tons, just as easily as you or I operate our remote controls.
And in Crete, Central and South America: aliens loaned the natives ray guns that actually melted stone, resulting in those tight tolerances that you can’t slip a piece of paper between.
I think he also says that we’re the aliens (they mated with us) so that might explain Dennis Kucinich, Joe Biden and The Won.