The Dalek Theory That Would Change Everything On Doctor Who

"Doctor Who" has fascinated viewers for over five decades. Fans can't get enough of watching the time-traveling alien visit new planets, take on companions, and save humanity time and time again. The series has only gotten more popular over time, further developing the Doctor's character and expanding the niche sci-fi franchise's appeal. As with any long-running franchise, there have been countless fan theories over the years, some which are rather plausible, while others can be a bit farfetched.

The Daleks are one of the most iconic villains in the show, having fought the Doctor and the Time Lords during the Time War — which had multiple casualties on both sides. Though they are enemies of the Doctor, and try their hardest to kill him, they have yet to be successful. There is a theory as to why they cannot seem to end the Doctor's life, and it's a pretty interesting one, since it fundamentally alters the terms of the series and the relationship between the Doctor and his nemeses.

Whenever a Dalek appears in an episode of "Doctor Who," it raises the question as to why these villains continue to allow the Doctor to ramble on and on, instead of just exterminating him right then and there. To answer this question, it's important to look back at the Fourth Doctor's era (played by Tom Baker). It is revealed that the Fourth Doc completely abandoned the opportunity to destroy the Daleks once and for all (via Tardis Fandom). In a very "Doctor Who" turn of events, this kindness actually leads to their creation. It is possible that the resulting paradox makes it impossible for the Daleks to kill the Doctor. If they do, they might find themselves ending as well. 

The theory has been explored further in the Season 9 opener, "The Magician's Apprentice." The 12th Doctor (played by Peter Capaldi) meets a young boy who turns out to be Davros, the future creator of the Daleks. The Doctor is conflicted when he learns of the boy's identity, but he does not abandon him and actually saves him. Because of this, the Daleks may not be able to kill the Doctor, because that might also hurt Davros. 

If this theory is true, it adds much more to the Doctor's relationship with the Daleks. He is not only their enemy, but also their continued savior.