> For one easy reason, you don't just build one from scratch without a lot of experience. A lot of artifacts of that period are -way- too impressive for the sam

> For one easy reason, you don't just build one from scratch without a lot of experience. A lot of artifacts of that period are -way- too impressive for the same reason. Where's the evidence for prior art of that calibre? Snefru, who was the Pharoah before Khufu (which is the one that build the Great Pyramid) provides a nice example of failure and progression. He first started with the Meidum Pyramid. This pyramid collapsed during construction. The he did the Bent Pyramid. This is like it's name in that the angle changes as you go up the pyramid. Finally, he did the Red Pyramid which looks like what we think of when we think of a pyramid. So yes, even right before the Great Pyramid, you can see evidence of a learning process. This article, https://en.wikipedia.org/wiki/Sneferu#Building_projects https://en.wikipedia.org/wiki/Sneferu#Building_projects provides a nice summary with pictures.