There was a lot of trial and error in the building of pyramids. There are several that pre-date the Great Pyramid which were colossal failures, suggesting that there was no magic or alien influence.....the Pyramids are just about perfect...without computers/etc......they used basic architectural tools that if they had been slightly off, so would've been the Pyramids
..I worked for engineers for 14 years and even with software designed for engineering, they couldn't build a simple box right sometimes
Are the pyramids all over Northern Sudan older or younger than the pyramids in Egypt?