How did they move a 100 ton block into those recesses ...and then complete them? Torch light and a copper chisel? Watch the sculptor video that Jon posted. They are there but they weren't made by the AE in the 4th.
Have you watched any of the video's we posted? If you have and come away thinking the very same thing that you thought going in, then there really isn't anything we have to say to one another.
I'm sure that you can agree that we see similar megalithic wall construction around the world - of the perfect polygonal type. There are pyramids in China which are apparently larger than Giza. Was there then a worldwide knowledge on how to build such structures...battalions of engineers and millions of workers to move the millions of tons of rock? With chisels and plumb bobs?