User blog comment:Ḡwẵine Ḹٍٍkƨ Ĺiĸe Ͼềлȑềd/How no one knowing Merlin's magic has not had a positive impact on the show/@comment-4879894-20121120002923

Like I said, the writers had a unique brilliant idea : Merlin keeping his magic secret. Obviously, a brilliant idea is hard to come by, as they don't want to give it up. Actually, I think that this secret has to be kept as long as Uther was the king. Since series 4 (or perhaps, the middle of the series), logically speaking, this secret would have been revealed. In your brilliant post (honestly, I'm impressed) you didn't notice that the stupidity of Arthur is linked to this secret too. If Arthur could have been told about it, there would have been no more need to maintain him at this level of ignorance and foolishness. Then, he can't be the king we all expect.

About Gaius, I don't agree, and historically you get it wrong. I will explain later.