@MontereyJack,
I have the guy on ignore but your post led me to check what he'd written.
I did a bunch of archaeology courses as well and considered making that my career but here in the Pacific North West, digging conditions are commonly pretty damned ugly, so I moved into education.
The amazing thing here is how the guy could be so misinformed and yet certain he's got hold of the truth. I suppose it is just another reminder that reasoning is far down the list of human attributes.