User blog comment:MrAnonymous/Who's to blame?/@comment-4683199-20121220215712

First, I'd blame Mordred, for not covering his tracks. Then I'd blame Merlin, for telling Arthur what Mordred's about to do. Then I'd blame Kara, for being so stubborn in her beliefs. Finally, I'd blame the human defect of misunderstanding, because I think of Mordred understood that Arthur actually gave Kara a last chance, but she threw it away, he may have forgiven him.

Most likely, they made the situation this complicated on purpose. They were trying to show that no matter what anybody does, Mordred is imprisoned by his fate, the chains of destiny locking him into place, dragging him into the dark future that awaits him.

And, don't get me wrong, the writers and producers did a good job of trapping Mordred, but I think it may have been somewhat easy for him to break out of this jail. The first point is okay, as it seems normal that someone could forget something, especially in a hurry. But the second, maybe if Merlin just DIDN'T tell Arthur, then everything would be okay. Maybe Mordred would realize that Kara's heart is filled with a burning fire of hatred, that cannot be quenched even by the meeting of death itself. It kind of seemed like that when she killed a guard (Mordred's reaction: "Who the heck is this woman?" maybe I'm exaggerating... ) If he lived with her and just saw that 20 more times, he might have left her (like how he left Morgana in Arthur's Bane, but in that he realized a lot faster.) Or maybe even if he did leave with her, she'd take him to Morgana, and then Morgana would be able to convince him to join the Dark Side.

The last blame makes perfect sense, as it normally happens with humans in the real world. The third point, too, makes sense, and this awesome quote is why:

"We are told to remember the idea, not the man, because a man can fail. He can be caught, he can be killed and forgotten, but 400 years later, an idea can still change the world. -  I've witnessed first hand the power of ideas, I've seen people kill in the name of them, and die defending them... but you cannot kiss an idea, cannot touch it, or hold it... ideas do not bleed, they do not feel pain, they do not love..." -  Evey - V for Vendetta.  