Interesting that they discuss pulling via human labor but not with bullocks, which the pharaonic Egyptians did have. Could it be there are no such pictures of animals pulling stones?
The bullock might have been useful for hauling a short hard distance (out of the quarry for example). However if the quarry is a long ways away (this might or might not be true) humans are the best labor choice.
Another useful google term is endurance hunting (theorized to be why humans are slow and weak, but have superior endurance)
Persistence hunt in the Kalahari.