> The true “dark age,” of course, was the early 1940s when, simply as a side effect of industrial killing, great swathes of the past disappeared. One small yet major example—the extraordinary series of paintings of the visions of Hildegard of Bingen, made in the 1170s either by the saint herself or under her supervision, disappeared in the general catastrophe that unfolded in Dresden in early 1945. We only know what…
> That's a very different situation than we're in regarding post-Roman, pre-Carolingian Europe. There are hundreds of years in there where we have practically no documentary evidence for anything. It is even more specific. Eastern Roman Empire remained functional until it fell to the Ottomans in 1453 AD. But in Britain there were not even coins between the years 410 and 600 AD: http://www.numsoc.net/darkages.html "Hi…
Interestingly, Ireland during the 400's to 600's was something of a bastion of Catholicism and 'western/classical' thought in their monasteries. Even though Britain was very pagan and 'dark', Ireland remained 'enlightened' at this time (though the populace was still very 'dark' and pagan in Ireland).
https://en.wikipedia.org/wiki/History_of_Ireland_(400%E2%80%...
Under this regional definition of 'dark ages', even today they occur. Lost tribes in the Amazon, the populace of North Korea, very rural towns in Alaska, etc. all can be considered to be in 'dark' ages to some degree or another.