[Dinsdale]

Actually they did build half a small pyramid using ancient techniques. Lead to the rediscovery of many methods used. They have also setup monoliths using ancient methods.

[justshutupandtakeit]

That half-assed attempt wasn't using 70 ton stones and fitting them to a degree of accuracy which we do not match to this day on stones of this size.

In fact, watching that program firmly convinced me that they don't have a clue as to how something like the Cheops Pyramid was really built. It was kinda like watching a Clinton defender try and refute the facts of his criminality adopting the most outrageous twists to deny the obvious.

Saying that does not mean I believe it was built by aliens.

The Olmec heads are clearly negroid.