As I said a few days ago, a book by W.A. Bazhaw, called The Search for Cheops and His Treasure, contains the only believable idea for how the Egyptians might have constructed the Pyramids -- especially the Great Pyramid -- using the technology of the day.
Bazhaw, a geophysicist by trade, brought a little engineering insight to the idea. Also, I would suggest, he had a flash of inspiration, much akin to Jonny Quests's suggestion as to how to see "The Invisible Monster," -- "Well, paint it!"
The simple but awesome idea for Pyramids didn't involve paint, but water. Hydraulic engineering, in fact.
With a watertight causeway built from the nearby Nile, all those stones weighing many tons could be floated on reusable barges.
You would build the outside perimeter of the the first level and then flood it. You would then float the stones into position and pry them off the barge, using poles and strong backs.
To 
feed the water, you would have a sloping shaft -- a hydraulic elevator -- up one side of the rising pyramid , building it higher as the walls rose higher.
feed the water, you would have a sloping shaft -- a hydraulic elevator -- up one side of the rising pyramid , building it higher as the walls rose higher.
All this was within the technological bounds of the Eqyptians of 2500 BC or whatever, and living next to the Nile, with its anuual floods, they certainly had the opportunity to observe the lifting power of water.
You should borrow or buy this book, if you want to learn more about this believable, possible method of pyramid-building.
It can be an aha! moment for you too!
