Impossible to carve stone, part 1

3D recreation of carved stones hauled using ramps.
Generations of school children the world over have been asked to imagine vast teams of Egyptian workers carving the stones, hauling them to the site of the pyramid and hoisting them up until each one was placed in its exact position. But, how could this have been done?
The Great Pyramid of Kheops is comprised of about 2.5 million blocks, most weigh two tons and could have been hauled by no less than sixty men. But some weigh up to seventy tons and these are to be found, not at the base of the pyramid, but some forty meters high. Since the ancient Egyptians did not yet have the wheel, they would have needed more than two thousand men to haul each block.
How could this pyramid have been erected in the 20-year reign of Pharaoh Kheops? To accomplish the task, at least 400 blocks per day would have had to be put in position as from the first day of the pharaoh’s accession to the throne.
Hundreds of thousands of men would have been working simultaneously – squeezed shoulder to shoulder in the space of a single block in a modern city. But this would not been feasible. In such conditions the men would not have been able to budge.
How could the Ancient Egyptians have cut these stones, which are extremely hard, with only the most primitive of tools?. At best they would have been able to use copper saws, and copper is a softish metal, incapable of hewing the hard limestone blocks from which the early pyramids are constructed.
How was it possible to transport the large stones when the wheel had not yet been invented and there were no pulleys to hoist them into the air?
If the stones were carved, as most people believe, where are the fragments of broken stone left over ? Limestone frequently splits on being cut. 5 million tons of limestone blocks must have produced millions of broken blocks and fragments. Yet, not a trace of them has ever been found.
How could a civilization without hard metals have carved the millions of blocks of the Great Pyramid to ten different and exactly-calculated lengths in order to set them in patterns throughout the whole structure to eliminate the formation of vertical joints?
How could these joints between adjacent blocks be achieved so perfectly? The joints between millions of blocks, vertically and horizontally are not more that 2 mm wide. How were the blocks cut and leveled without motor-driven machinery or diamond drills?
The answer has at last been found, and it totally contradicts the stone-carving theories. The pyramids were cast in situ. Curiously enough, that explanation had been there always, waiting to be discovered by examining the mysterious stones from which the pyramids were built.