You know, I hold a BA in History and I've seldom seen such finely researched material, tested with full academic rigour but also accessible to the general public.
I have one slight complaint in that the Dark Ages had ended when the 12th century was rolled around and we actually refer to that as the High Medieval Period as feudalism had reached its zenith and Crusaders began sending ENORMOUS amounts of a new herb called Hasshish from the Holy Land, praised for its pain killing properties and the wonderful side effects of making absolutely everything on that tapestry fucking hilarious.
Also, love that opening sequence....
I'm sure you're all sick of reading about tech issues so I'll just focus on the writing:
Paul, you charismatic stallion! Magnificent!