Earlier quoted context omitted.
The number of 20 years is often repeated for the great giza pyramid, however its constructed using 2.3 million stones (~2.5 ton each) meaning they would have to place a stone every 5 minutes, for 20 years to make any sense. Traditional theories of egyptology fiercely defended by argument of authority are utterly useless. In reality nobody has any idea how, when or even by whom (I would despute the cartouche as solid…
Five minutes per stone actually seems rather slow IMO. 2.5 tons sounds really heavy, but just 25 people could lift and move that much weight. 50 people could move reasonably quickly and 100 people could carry that at a normal walking pace all day long. PS: They also used larger stones on the bottom and smaller stones at the top.
In which planet's gravity?
And carrying them from which remote location, on which nicely paved roads to make this easy?