And it's very easy for an author of an opinion piece such as this to overlook something or over extrapolate something or assume that medieval drawings are accur

And it's very easy for an author of an opinion piece such as this to overlook something or over extrapolate something or assume that medieval drawings are accurate. In the case of this article, most of what the author has cited is information about the British Isles and then extrapolated that information to cover all of Europe even though regional differences almost certainly existed and things likely changed over time as well. It's not like the world was just static for 600+ years.