The stones are there, they were moved, so it did happen. To prove they didn't move them with ropes, rollers and temporary inclines of earth he has to come up with a credible alernative. He hasn't offered any credible alternative method.
I enjoyed that vid, ta. There are pics in the family album of us kids scrabbling over the buildings. My parents used to go to open air opera concerts there too, must've been quite impressive.
i dont know i can only guess, but it shows they were just as intelligent , actually i would say they're more intelligent than us, the way things are going at the moment.