Irish Origins on YouTube

Irish Origins: Archaeology, Genetics and Linguistics, by James Mallory, Emeritus Professor at Queen's University Belfast, is the most recent presentation posted on YouTube from Genetic Genealogy Ireland, Belfast, last month.
It looks back to times well before those of interest to most genealogists, well before surnames. Did you know Newgrange was not built by the Irish (meaning Irish speakers)?
This longue durée approach  may be an interesting diversion toward understanding Irish heritage