[Getready]

Need documentation puhleeze. Ancient man just as smart as us..just not much as much technologically capable materials and scientific/technological discoveries.

[Getready]

Not much as much = not as much.sorry bout that typo.

[Windflier]

Need documentation puhleeze.

Documentation? Here you go:

DEAD MEN'S SECRETS: Tantalising Hints of a Lost Super Race

[RoosterRedux]

Need documentation puhleeze.

Did Columbus (or the Vikings) need documentation?

Did Cortés, da Gama, Vespucci, Alexander the Great, Buzz Aldrin, Kit Carson, Herodotus, or Tenzing Norgay need documentation?

Documentation is for men who have no imagination.

[rawcatslyentist]

Need documentation puhleeze.

Have you ever heard of the Indian Mahabharata?

While not quite a Popular Science complete plan to build your own helicopter with parts found in your garage, they are a bit too detailed to be written off as fiction.