I can't see how you can produce an "exact replica" of a pyramid anyway.  Perhaps the appearance otuside, but to me an exact replica would also mean what is inside the pyramids, and most of us have never been inside one, and even those who have are still discovering hidden rooms.

All they know thus far is that the pyramids were built using higher math skills and aligned with certain constallations. Heck, we can't even figure out how they went about building something that massive in size with the technology and tools that they had back then.

"It is good to see ourselves as others see us. Try as we may, we are never
able to know ourselves fully as we are, especially the evil side of us.
This we can do only if we are not angry with our critics but will take in good
heart whatever they might have to say." - Ghandi