One for Sorrow

I still remember how annoyed I was when Dean couldn't remember more than three words of the exorcism ritual and I was like...this guy is supposed to be a skilled and competent hunter who, by that point in the show, had had significant contact with demons, you would THINK that memorizing this ritual would be a natural part of his arsenal but it was more common (and easier for the plot of that episode) for him to be stupid. Yet you know if SAM had been in the same situation, he would definitely have known that ritual backwards and forwards.