Just started watching it today! Only 3 episodes in but he’s on to something I reckon. The older stonework being more advanced is compelling and seemingly consistent across different regions.
Discussion
I’m not sold. Maybe. Other stuff like statues with hands on lap or some nonsense was total gibberish.
Nothing wrong with a bit of healthy scepticism.
There are others besides Graham who do this stuff from different angles. e.g https://m.youtube.com/playlist?list=PLb1MDIWaJM6ll4xS6jBDsCVDjjEJhfQQ2