Originally Posted by Goldendog Redux
Oh yeah, if Aliens helped the Mayans, Egyptians etc. build their temples and pyramids, why did they build them out of rocks instead of metal and not give them electricity and stuff? I don't expect aliens arrived in spaceships made of rocks, mud and lit by candles.
I love the whole "pyramids are signs of advanced technology" shtick. Ask any mechanical or civil engineer, a pyramid is the only large scale construction that doesn't require any engineering knowledge to create. Dump sand into a pile and what do you end up with? A pyramid.
That is the reason the pyramids have lasted as long as they have, they are already at the angle of repose for the material they are made from, they really can't fall down.