Could pyramids be built with the techniques we have today?

 

1. We could. But no one is willing to pay for it.

1. The Great Pyramid of Giza was built around 2600 BC. By the time Cleopatra, the last queen of a free Egypt, died, the pyramid was already over two and a half millennia old. It would remain the world's tallest building for about 3800 years, being dethroned by Lincoln Cathedral in 1311, though it dwarfs the Cathedral and most modern buildings in other respects.
   
   I say all this to give you a sense of perspective. For thousands of years, people have looked at the pyramid and wondered how it was built. Nothing like it had been built before or since. It was filled with indecipherable hieroglyphics, a product of an ancient and unknown culture. Perhaps the first ever.
   
   Its construction has been attributed to giants, angels, aliens. All because of how incredibly enormous, yet useless, the whole thing is. And for a long time, no one had any idea how it was built.

1. But with the deciphering of hieroglyphics and the advancement of archaeology as a field of study, we now have a good idea of ​​how it was done. The pyramids were grandiose public monuments of a wealthy civilization with an abundance of surplus labor.
   
   They cut blocks of stone and floated them down the river. They organized hundreds and thousands of workers and had the blocks moved around. They built them in pyramids because it was the simplest shape the structure could take.
   
   There is nothing technically challenging about the pyramids, except the organization of so many people toward a single goal. They were built in honor of a living god. But they were built with simple tools and simple methods.

1. If you could somehow organize that many people again, there's nothing stopping you from building another pyramid. And if you had the money, you could simply use modern equipment to build it 100 times faster.