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this video is very interesting but hes right how did the past people of the world build such huge and complicated buildings and how did they cut the bricks to such percise shape ? without meadle tools it makes no sense they didn't have the tools and indians of the new world were very advanced in astronomany they had a very percise calinder and knoleg of the stars you have to wonder how people one day sprong an evelution to us and dose any think atlantis was real i shur do and atlantians were soposivly war bound people so if there blood line were to still igsist think of what will hapen if they ruled that would be a disaster and i dont know how they turned masive rocks to shapes i dont remeber were the past is the most interesting time because of wut they could build and how did they do it without the proper tools? tis is a very good and intriging mystery we will probobly never know.
And what about the discovery of DNA, penicilin, fire, spears, gunpowder, MRI scanners, computers, men walking on the moon (maybe

), airplanes, a galaxy that revolves around the sun, the gorilla, jazz-fusion, radio, bronze, iron, printing, language, coca-cola, football, hot-pants, the remote control, cave painting, clothes, the wheel, zero, electric guitars, irrigation, hanging coffins, pornography, mobile phones...
Can I explain how they built what they built? No. Is it possible they managed it given the infinite inventiveness of humans and an unlimited supply of man power (people "carving" bas-relief by rubbing one stone against a bigger one for hour after hour, day after day, month after month, year after year)? Yes.
The fact is that we humans are an inventive lot. We might put a lot of our noggins towards better ways to kill each other but we sometimes come up with pretty cool stuff.