Yeah, exactly! If anyone failed Rodney in that situation, it's his closest friends, who apparently didn't notice his personality changes either. If nothing else, why didn't Teyla and Ronon recognize the symptoms, which should have been familiar to them? I don't really feel like anyone ought to be blamed there, but of all of them, Keller probably bears the least culpability, because she's not as familiar with what Rodney is normally like -- and we know from Tracker that he sometimes deliberately changes how he acts around her, too, which doesn't help!