I watched

A short I watch a YouTube show, fairly long, about how the pyramids were related around the world and about what kind of math they used to design and cut those large stones to build it.  The engineers were saying that we could do it today with machines but not like they did it back when.  It took a lot of manpower and smarts from someone.   They also said that if the world ended now the pyramids would still be around.  Some things on YouTube are interested and informational but others are not.

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