[marshray]

For anyone interested in modern humans' ability to move material around when it is economically advantageous to do so, try a web image search for "largest open pit mines".

[sscaryterry]

There is a big difference though between placing blocks precisely, and running dump trucks.

[marshray]

Look up a photo of one of the large mining trucks and compare it to the size of the blocks used in the Egyptian pyramids.

Working with blocks of this size is just not a problem for modern equipment.