Originally Posted by Drz
I like how Thor, who has known his father for years, could have been fooled by a switcheroo.
Thats totally o.k. he can be soooo blind to whatever Loki does it`s not even funny like a switch in the head (it`s even funnier as later, when he finds out, he would have total and complete meltdown).
He could, if he beware of Loki, easily sense his magic (illusion in the cell for example) but it was after some time that he didn't see him and so was free from Loki`s influence. By the end of the movie Loki restored his control over Thor with all that bonding and "I didn't do it for him..."(implementing giving his life for Thor and in revenge of Frigga`s death), so here we go again - Thor would not see anything even if some one yell truth at his face. Now I am waiting for Thor 3 to see epic meltdown it should be something to behold!