Of course most people underestimate the warrior characteristics of the Anglo-Saxon and Norman peoples anyway. It takes a heap of piety to keep a Viking from wanting to go sack a city.
Jerry PournelleA Dark Age is not just a period in which people no longer know how to do things. The real key is that people no longer remember that certain things can be done at all.
Jerry PournelleBureaucracies are progressive. meaning they have a burning fear that someone. somewhere, is doing something without permission.
Jerry Pournelle