This one draws some really interesting connections between the nNolithic sites across scotland (especially those of the Outer Hebrides and Orkney Islands) and other ancient sites (Egypt, in particular) and theoriezes a bit about how these bizarre coincidences (like precisely matching measurements) may have come about (i.e. perhaps they are a common origin people).
It’s hard to tell how credible he is though, as a layperson myself. He draws on, or at least seems to draw on, an enormous wealth of information connecting these things but I would love to read another historian or archaeologist's take on these (are his numbers actually right? Are his measurements actually legit? Or is he just fitting the evidence to his theory)?
I am also perhaps not as convinced as he is that just because there are a lot of linguistic similarities between the northern Scottish, the Armenians, and the Sardinians are very similar means they actually have a common origin. I think he got a little lost in the sauce of his enthusiasm.
Giving it a tentative three stars, but if I come across other perspectives supporting his conclusions, I would probably up that to 4 or 5. And if I come across the opposite, and he's totally debunked, I reserve the right to make it a 1 star. Proceeding with caution but curiosity for now.