User blog comment:Ḡwẵine Ḹٍٍkƨ Ĺiĸe Ͼềлȑềd/WORST plot hole in the HISTORY of 'Merlin'/@comment-41.136.233.107-20121017034603/@comment-4190137-20121017053554

It was just a mistake made by the director. Wouldn't get too worked up about Arthur... ;)