Imagine we wanted to make an exact copy of the pyramids in Egypt, the great pyramid specifically.
Never mind building them without machines. Do you think mankind, not just the current residents of Egypt, but do you think in this world there exists the technical know how and political will to even be able to do it?
There is no any building problem of the past that could not be resolved with enough slaves.
50,000 Nubian slaves won't get shit built without someone there with a plumb bob and the know how.
There is not much know how in pyramids. And I can't imagine what use of their technologies could be useful today for anything.
You know, tech of making wooden wheels for a wagon is pretty interesting and sophisticated (more than pyraminds, IMO), but who the fuck could need it today?
Same with pyramids. Humanity built a lot of things much bigger and sophisticated than pyramids. Take an average HPP dam f.e. or starting table of a cosmodrome. I could not think out not only why anybody will want to build a pyramid, but even if he want, why whould he use that ancient and ineffective tech?
Lol, i mean your not wrong, but you cant compare something like the great pyramid to a modern work.
Something like a dam or skyscraper is built using modern materials, concrete that breaks down and steel that will eventually rust. Although the romans had concrete that still stands today, I doubt it would last 10,000 years.
We use these materials because they are easier to transport, and cast/form, than stone which is what was used in the construction of the great pyramid.
Sure, we could do it, but how long would it take, how much money would it take. It would certainly require the largest cranes known to man, but somehow these ancient people did it in, supposedly 20 years?
Then on top of that, the site itself is aligned with the stars, though some would argue that is just coincidence somehow, so it seems to have been intended to convey a message.
https://www.historyfiles.co.uk/FeaturesAfrica/EgyptPyramids01.htm
I do wonder if there is any truth that the pyramid contains the volume of the earth, or the equation for the speed of light though.
https://imgur.com/F8ISnSq
https://www.scirp.org/journal/paperinformation?paperid=132830
:Shrugs:
You could make concrete of any quality, it only depends on price. Concrete used, f.e. in building NPP reactor zones is magnitude orders better than any roman concrete you could find out. It will last for hundreds of millenia if not thousands.
Really, concrete checmistry is much more interesting and, what is more important, useful mystery than all pyramides of the Earth together. It is really still only partially studied, and not all processes going in concrete have explanation, despite our use of concrete for millenias.
Rebar does not rust inside concrete, because it is protected by alkaline environment of concrete. If you follow guidelines and do not allow rebar to stick out and keep at least 5cm between rebar and concrete surface it will last forever even in underwater constructions.
Egyptian astronomer need only to find directions to the sunrise and sunset of any day, then find a middle. Today we will name it vector algebra and sum of two vercotrs pointing to sunrise and sunset will be vector directed precisely to the axis of earth rotation, we don't really have to. People learned to precisely half things long before Egypt.
In any case, all that pyramides things is undoubtely fascinating, but I can't imagine that anybody here never heard about pyramides and didn't read similar posts thousands of times already.
Funny, that this constant repeating that Egyptians build pyramides with assumption that we could not do that now is even more puzzling then pyramides themselves. Like some cult that demands constant praising pyramids. IDK, choose some date (may be "encoded" in pyramides), make that day a "Egyptian pyramides day" and celebrate it. Would be a nice archeological holiday.
Our ancestors did a tons of interesting and amazing things and we don't know how exactly they did it. But all that things have no any relevance today, and nobody need to repeat them. They without a doubt have significance in historical sense, and deserve place in books and articles, but it is just senseless to repeat them again and again like they are something in line with current conspiracies.
I'm all for discussing anything weird and strange from bigfoot and UFO to pyramids and greek fire, but only in presense of some new information. Repeating all that old and well-known stuff everybody already read in hundreds of books and thousands of posts is extremely weird and looks like some strange conspiracism cult. We assemble together and tell each other exactly same old stories round and round. And it is even do not bring anything for soul or thought, unlike, say, church service or just listening beloved music. It's fucking weird.