Comment by vitally3643

Yes, experimental archaeology has reproduced the process from quarrying to transport.

But also there are accurately hewn stones all over the world from many eras of history. It is not unique or special in any way.

The pyramid stones also aren't generally that accurate in an absolute sense. They just fit really well together. The vast majority aren't particularly flat or square, but have been worked to mate with their neighbors, which is a very different and far more mundane type of work. Some stones, particularly exposed interiors and the outer face of the casing stones were cut pretty accurately, but only the parts you can see. Inside they're usually pretty rough.

Ancient Egyptian stoneworking was impressive, even at the time, but not spectacular or exceptional. Other civilizations throughout history have built to equal skill, if not scale. People in the West just get so caught up in the mystery of the ancient Egypt myth that they think it's magical ancient lost technology. It was just regular human labor and skill, but a whole hell of a lot more of it applied in one spot than anything we can imagine today.