User blog comment:Ḡwẵine Ḹٍٍkƨ Ĺiĸe Ͼềлȑềd/WORST plot hole in the HISTORY of 'Merlin'/@comment-5102537-20121015094558/@comment-4190137-20121016060405

Well, he still knows...

Not everthing has to be WITNESSED to be known.

But that's the way I look at it. ;)