User blog comment:Ḡwẵine Ḹٍٍkƨ Ĺiĸe Ͼềлȑềd/WORST plot hole in the HISTORY of 'Merlin'/@comment-69.171.172.97-20121014203005

Um, dude, that is NOT a plot hole.

Little Mordred was a Druid's APPRENTICE. He was brought into Camelot by a Druid who needed supplies. True, Gaius said to Merlin that Druids seek out children with magically or telepathic gifts as their apprentices, which may be the one reason Uther was so hellbent on killing the kid (aside, that is, from setting an example to all magic users' supporters, obviously), but Gaius, per my memory, never said that to ARTHUR. It was MERLIN who saw Mordred scream and use magic (Morgana, too, when she saw the mirror shatter; The beginning of the End), not Arthur. As far as Arthur knows, the kid was raised by the Druids, knows their ways, but has probably either turned his back on magic or is indifferent to it. (For pity's sake he stabbed A HIGH PRIESTESS in the BACK!) That's probably what Merlin meant when he said, "If Arthur knew."

BUT there IS, in my opinon a slight plot hole in the fact that Merlin never ONCE brings up the fact that the last time he saw Mordred, the kid said he would NEVER forgive nor forget what he had done to him (tripping him so the guards could catch him). Personally, though, I'm thinking maybe it'll come up later, like maybe Mordred will do something terrible to betray Merlin (reveal his magic to Arthur, perhaps, at very bad moment) and then say, "I told you I'd never forget/forgive." That would be kinda epic.

But seriously, what you pointed out isn't really a plothole.