Re: Harry Potter and the Deathly Hallows - 21 July 2007
Whether or not Harry was a Horcrux has been debated from the moment everyone finished Half-Blood Prince. Personally, I think it's not physically possible. Dumbledore suspected Voldemort intended to use Harry's death to separate his soul for the seventh time. He would then capture the piece of his soul and place it in an item to make the horcrux.
The problem is that Harry can't be a horcrux because his death was being used to make one. He would be dead before Voldemort would have a chance to stick his soul into Harry's body, and I doubt the Dark Lord would be stupid enough to do so. Plus, to Voldemort's mind, he was destroying the only person capable of defeating him, leaving him less reason to leave Harry lying around.
Secondly, the timing isn't possible. From the sounds of things, a horcrux has to be made almost immediately after the would-be caster makes his or her kill. When Voldemort attempted to Averda Kedavra Harry, the killing curse rebounded. Most importantly, it didn't kill Harry, so Voldemort's soul was never split. It also collected the Dark Lord when it rebounded, and technically, the curse did not kill him. In Voldemort's own words, it reduced him to "the meanest spirit". There wasn't much left of the Dark Lord, and while he body may have been destroyed, Voldemort was still alive (if it can be called that). Even if he had have succeeded in killing Harry and was not preoccupied with being torn from his own body, Voldemort was unable to hold a wand, and therefore unable to cast the neccessary magic to create a horcrux. He might be evil, but he isn't stupid: as soon as he realised what had happened, Voldemort had to know he had done something right to avoid death, and while he might have missed out on making the seventh horcrux, he has shown that he is incredibly patient and more than willing to wait for the opportune moment. Sure, there would have been symbolism in using Harry's death to make a horcrux, but since no-one died, no horcrux could have been made.
Therefore, if the seventh horcrux has been made, it isn't Harry.