Howling:Why the Doctor has different personalities per regeneration

Hasn't anyone wondered why the different incarnations of the Doctor have, well, different personalities? I've been giving it a bit of thought and this is what I've come up with: The Doctor's "regenerations" are all different aspects of his psyche and all are still present inside the Doctor's min, and every time he regenerates, a different part of himself takes power. I think this is why Time Lords only get thirteen lives, since theoretically there can only be a finite number of personalities and only one can take control at a time (and only once at that). I also think that this is what that Tom Baker-curator meant when he told the Eleventh Doctor that he was likely going to regenerate back into familiar faces at the end of "Day of the Doctor," although I don't really think that the "War Doctor" from that same movie fits into this pattern of regeneration since he was "created" by someone other than the Doctor. My guess is that's why he isn't technically counted when one lists off the Doctors numerically. Anyone want to pose a different explanation? Skull Boze ☎  22:37, December 29, 2013 (UTC)