Not trying to sound like Mark Kermode here, but Listen wasn't a horror story just as Tinker Tailer wasn't a film about spies. This was a story about time travel, destiny, pre-destiny, and finally about FEAR - all thats good and bad about it. In exploring fear and its effect on all of us, it shows intense scary scenes, but the point wasn't to be just a simple horror story. It was so much more cleverer than that.
Originally Posted by TheSilentFez:
“The Doctor begins, through paranoia, to formulate a theory that no-one is ever alone and decides to test that theory. In the end we never find out whether he was right or not, but we are presented with two possibilities:
1. He is and there is indeed a strange entity lurking in the shadows and hiding from every life form.
2. He isn't and this was all a result of a minor paranoid breakdown which may have been caused by Clara interacting with the Doctor's younger self.
In addition to this, we had a bit of development of Danny's character and Danny and Clara's relationship.
I suggest a re-watch.”
Great analysis, can I refine it slightly (EDIT: or more than slightly)
The Doctor is in his TARDIS and is pondering about something which affected him when he was small - a memory that maybe just came back to him or has been there for a while now. That was - the monster which came out from under his bed when he was small when he was most afraid. About how that "monster" at first just told him "LISTEN'. The monster who inspired him to take hold of his fear and how he has used it repeatedly many times to help others and/to take control of situations. That time in his life was so important to him he revisited it at one of the most significant points of his future life as an adult in the Time War. A time which had such an influence on him it led him to adopt a mantra and to choose his name - The Doctor.
In investigating it he settles for what seems like a logical explanation - there is a race out there who specialise in hiding and finally he is going to seek them out and come face to face with them (Its kinda like Prometheus and the chase for the creator). In doing so he sets off some amazing pre-destination paradoxes. He inadvertently inspires Rupert Pink to become Danny Pink by sowing the idea of Dan the soldier, the heroic soldier to make him forget their meeting. He inspires Danny Pinks' descendant to become the pioneers of Time Travel. He inspires Orson Pink to be the hero, to brave his fears and to leave the TARDIS to save the Doctor from being pulled out into nothingness even when earlier he just didn't want to be there one more night or open that door.
Also, while investigating this mysterious hiding race, he accidentally leads Clara into doing something trippy, by landing in Dannys' early timeline instead of hers where she is the one to comfort the young Danny during an intense event in his life. The Doctor then follows this timeline still thinking its Clara's to find a future descendent stuck at the end of the universe and sees what he thinks is his chance to come face to face with that horror that scared him/inspired when he was young. He obsessively pushes Clara away back into the TARDIS to face his fear/inspiration on his own. Increasingly guilty/afraid about causing this in the first place, i.e. by sending the Doctor on the wrong timeline, and having too much fear to tell him the truth, Clara tries to set things right by flying the TARDIS the Doctor and all of them out of danger the only way she knows how. Concentrating on her timeline in the telepathic circuits and letting it fly away. Ofcourse, she is thinking about the Doctor at the time because he is unconscious and she is worried and so the TARDIS ends up in his timeline.
Ultimately, the Doctor through Clara and through the TARDIS create the events which finally lead to the Doctor as we know him existing in the first place. That same Doctor ultimately has many adventures, saves many people, and one day inadvertently meets many Pinks through time, causing young Rupert to become Danny today (and later to create a descendent called Orson as well) which ultimately leads to a sequence of events that result in Clara by his bedside as a kid.
Lets not forget who Clara was when the Doctor first met her, an enigma, an impossible girl, a control freak but just a human, with fears and so scared. Now she is strong, she cares so much for him, she handles herself admirably in tense situations, oh and by the way still has the strength to have a normal life, dating, teaching and giving the Doctor some common sense at times, etc. Through the Doctor she is a much stronger person too like Danny. Through the experiences she has shared with the Doctor, she gained wisdom that inadvertently got replayed back to the younger Doctor to inspire him to become the Timelord who inspired her to grow and become a stronger Clara who then fed her strength back to the younger Doctor and around and around ..........
Timey wimey at its best !
p.s. I don't see it taken as red that Orson is related to Clara. Only the Doctor thought he was chasing Claras' timeline, when actually he was following Dannys'. Clara & Danny may get together, not doubting that at all, just saying .......