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My theory is the TARDIS doesn’t want to be anything else. To summon the TARDIS is to summon help. The plaque on the front basically means “help is on its way”.

THe chameleon circuit's function (in the Doctor's specific TARDIS) has, in my opinion, best been summed up by the Doctor: "It scans the nearby environment, determines the best thing it could turn into to blend in, and then turns into a blue police call box." Side joke: I wonder if the TARDIS does this because it got tired of the Doctor forgetting where he parked.

It did occur to me shortly after the reveal of Tennant's return that the 14th Doctor is the show's chance to re-introduce River without changing the timeline. I'd love to see her come back

One point that always was weird to me, that could kind of make sense now, is when River asks 10, "Crash of the Byzantium, have we done that yet?". I find it such a strange question to ask. When it aired, it could just be passed off as off screen throwaway line, but obviously, later we come to find out that's the story we see in the first Angels episode with Matt Smith. With this additional context, why would she ask that question? It's not like she wasn't there, she saw the 11th Doctor, I can't imagine she'd forget the face she saw. Especially if she can tell he's younger than the 11th Doctor, the answer should be obvious, how could he be familiar with this event had he not even reached that regeneration yet? If River had met fourteen, the ambiguity she may have around timelines could make some sense. She'd have then met a version of the Doctor that shared the same face, completely familiar with those events she'd experienced alongside 11.

I have really loved the idea of River having met the 14th Doctor and that's why she said about how young he was ever since I heard about it. She just meant in his lifetime but did she. ..? 😉 Big Finish with River and Ten is one of my favourite audios ❤

I like to think the doctor in his older 4th doc/curator body goes and sees Sarah jane before she dies. They fill each other in on their adventures, I particularly like the idea of her filling him on how Luke came into her life.

Considering that The Husbands of River Song shows that River at least knows OF all of the Doctor's incarnations from 1-11, and the Big Finish adventures established that she has indeed encountered earlier incarnations than 10, she would certainly have been aware that she had met earlier forms of the Doctor than him. Thus it would absolutely make sense that she was referring to the young appearance of 10 as opposed to an older version of that face as seen on 14 rather than an earlier incarnation. River has been my favorite character ever since she was introduced, so I'm all for seeing her reappear for another adventure or two with 14!

I think that the reason regenerations are so explosive now compared to the classic series is answered in "Night of the Doctor." Ohila from The Sisterhood of Karn gave him a special mixture of the elixir of life. When he asks will it hurt, she says yes. Plus, you see Ohila with top Gallifreian generals and leaders in a few episodes. I think it was the elixir that changed the way he regenerates. So, it might be safe to say that the Sisterhood might have weaponized regeneration for the Time Lords.

I always thought that Clara's TARDIS was the exact same place as the diner seen in the Impossible Astronaut, but it never occured to me that it's because Clara used it to go back in time to check in on the Doctor and help him along on one of his adventures much like her splinters did when she was trying to save him from the Great Intelligence. That would be genius! She could be watching him from the back room on her monitor so as to not interfere with what was going on, and of course to not have either the Doctor or River see her. It makes sense that she would miss him so much that she would try to go back in his history to at least observe him from afar (in a sense) and make sure he was all right. Just proves how much she loved him and how strong their connection to each other was. Besides, she has a TARDIS, why wouldn't she go back in time to try to see him again? It makes all the sense in the world, wouldn't we do the same thing if we were his Companion?

I'm glad River and 14 was included. I rewatched River's first appearance the day the 14th doctor was teased and the moment she mentioned his face I got very excited. I want to add that River describes their timelines together as coming from opposite ends but when River meets 12 it gives away the true nature of their timeline. Their life was never in any specific order. River's journeys with the doctor began with 11, then the older 14, the younger 10 and finally with 12 before her last moment with 10.

OH MY GOSH, I LOVE the idea of the Time Lords modifying their biology to make regenerations like kamikaze attacks!! OMG that is SUCH a good explanation for why regenerations are so different now!!

I really like the theory about River having met Tenant's new Doctor. It nicely resolves one of Moffat's many plotholes.

Given that the TARDIS literally tells the Doctor, "I may not have always taken you where you wanted, but I always took you where you needed to go." (Or something like that) you could argue that the Chameleon Circuit is "stuck in Police Box mode" for a similar reason, if you wanted. Honestly, I'd like to think it's to support the legend of The Doctor. The Good Man. The one who tries to save people. Throughout the universe, the blue Police Box should be known as the symbol of The Doctor. And maybe that makes less people shoot at it or something lol. Could even get into some real world stuff about how police should be trusted... but let's not jump into that black hole.

I've heard the theory that Series 7A happened out of order for the 11th Doctor from several articles concerning fan theories of the show. A couple of pieces of evidence holding up this theory were A: the Doctor, Amy and Rory going back in time during King Henry VIII's time in The Power of Three, despite having already done so in A Town Called Mercy (which was explained in some offscreen source as being the three were retrieving Rory's iPhone charger which was mentioned to have been accidently left behind in the latter episode); and B: the Doctor crying at the end of The Doctor, the Widow and the Wardrobe as that would be the last time he would see them. Some people even think in Pond Life (the five-part mini episode that served as a prequel to Series 7A), when the Doctor attempted to see his best friends but they were out, he was hoping to possibly see them again and say goodbye. This was also apparently why he was upset while he was leaving the voicemail he sent them. Also, the Doctor already explained in School Reunion that he's afraid of seeing his companions grow old and die while they're with him, as per why he didn't mention Sarah Jane or go back for her. And there have been some thoughts that the regeneration energy built up in the Doctor from when his 10th, 11th and 12th incarnations prolonged theirs for as long as they did. Did you not notice that the 8th, War, 9th, 10th (initially, that is) or 11th Doctors (the second time, anyway) didn't destroy anything when they changed and were in their TARDISes? Overall, one theory I can't help but shake off is all of the non-Doctor Who fictional characters believed to be Time Lords (Mary Poppins, James Bond, Miss Frizzle).

If the Doctor fixes the Chameleon Circuit, he might forget what shape the TARDIS is and forget where he parked it.

So far I've only seen the thumbnail but the proverbial light bulb just went on over my head. Back in "Silence In The Library", River had never seen him (i.e. with that face) so young--because she'd seen that face when he is older. Makes sense. Also explains why she felt that the picnic at Asgaard (sp?) and the crash of the Byzantium might have already happened for him back when he was Ten. Makes sense. Okay, proceeding to watch the video now...

Rory was the Master under a chameleon arch. That was how Prisoner Zero - the Master in his morphant "snake" form per the telemovie - actually escaped, and this explains Rory's anachronistic 1990 badge. The real human Williams, never seen on screen, was an orderly in Grace Holloway's hospital in the 90s. All the multi-form stuff was just extra morphants. And this is how Rory can die and die again. And why River, the Master's daughter, is a Time Lady. This is also the reason Eleven poked Rory in the head when they first met and said he has a "living but dormant mind". And, of course, the Master's Tardis, made invisible thanks to its working chameleon circuit, was parked on the duck pond - which is why there were no ducks there.

In “The Fires of Pompeii” we’re introduced to the idea that the Police Box is so much a part of history that perhaps it is synonymous to any time and place. So for all we know, the chameleon circuit is working perfectly, because everywhere in the universe has seen a police box by now. 😂

Surely River Song has met the 10th and 14th Doctor prior to events in the library. She asks if theyve done "the Byzantian Yet?" a question the 14th would say yes too where the 10th would say no, therefore checking which incarnation she's talking to.

That would explain why Professor River Song recognized 10th's face, thinking he's the 14th in the library.

My theory is that the chameleon circuit was never broken. The sentient TARDIS just likes the blue box best. 😉

I always just assumed that the diners were the same place.. The series 7a theory: a lot of the Doctor's life happens in the wrong order. Wibbly wobbly. I have absolutely no problem with River having encountered 14. I have no problem with River encountering ANY Doctor at any time at all. And that plaintive "Yes, pleeeeease!" makes me think I may not be alone. Binary.

First! Does WhoCulture Comment? I love it when Ellie ends the episode with ‘Goodbye, Sweeties’

One common theory about the more explosive regenerations is that overall regenerations build in strength over time which is why Time Lords have a limit to them as eventually the build up would kill them outright.

My regeneration theory is that regenerations get more intense based on 1) how far along the cycle you are and 2) the severity of the damage that caused the regeneration. Matt Smith is a good example. Last in the traditional cycle and also he should have regenerated decades prior (John Hurt regenerated because he was "wearing a bit thin" and was in significantly better outward health than Smith). I also think it gets more explosive the longer the doctor tries to hold it in, like a lid on a boiling pot (see 10 and 12 who held their regenerations for most of their grace periods). 10s first regeneration into himself and Yana into Simms's Master were a lot less explosive because they didn't hold a regeneration back. Same with 9 into 10

My theory is that the Time Lords are a necessary paradox within the universe. For example the timeless child was already a time Lord with regenerative powers, possibly hinting that she was the last incarnation of the doctor, snatched back in time to provide the race with their main attribute. But I also think it gets more convoluted than this. When 10 encountered Jackson Lake, I do not think that it was a simple infostamp that he had absorbed, but a page from the cyberium ... in effect a genetic snapshot of the doctor (something that could not simply be removed). Armed with that knowledge (and practical immortality), Lake was able to create the first TARDIS, travelling to a Gallifrey that did not yet possess Intelligent life, thereby being able to guide their society as it emerged so that they were prepared for the arrival of the timeless child. This would explain why human appearance is prevalent, and the borderline obsession of some time Lords with earth.

While Clara's TARDIS may appear to be the one in _The Impossible Astronaut, _*_IN_*_ The Impossible Astronaut,_ the Doctor emerges from the door in which _Clara's_ TARDIS shows to be the way to its main control room, and in _The Impossible Astronaut_ we can see during the Doctor's entrance that behind him is _not_ a TARDIS control room...

I actually had headcanoned River’s encounter with the 14th Doctor from the very start. As you said, it just makes too much sense to not be true.

It would be possible for River to have met future reincarnations of the Doctor. We know she is from the future but no specifics were give in the time period she came from. What comes to mind for me is the lines from The husbands of River Song. The part where she says that she is an archeologist from the future and that she dug him up, and then she says see you in 400 years. So she traveled 400 years to the future to dig up that wreck, so we have no idea how many times she appeared in between when she was on the ship with the Doctor and when she dug up that ship's wreck. There is a lot of fluidity with the timeline of River Song that it is possible that she meets up with the Doctor in the future.

i really hope River shows up in the 60th if not ill be really upset :c if that doesnt happen i hope she meets 15.

The 14th Doctor theory is awesome and even if its not Who canon its now head canon for ME!!!

Years ago my dad built me a TARDIS wardrobe and he said the hardest part was decorating the outside because of all the changes 😅 He ended up going with the 10th doctor's version since it was the one on tv at that time

Oh he 100% likes the tardis the way it is, it has been mentioned tons of times including like you said when donna told him how to fix it but the biggest example that comes to mind is Bill saying that he likes it because it advertises that assistance is available to all who ask

My favourite fan theory is that the Doctor's real name is 42. The answer to the ultimate question of life the universe and everything

River being confused why 10 doesn't recognize her in the Library would make sense since, if she met 14 before 10, then she'd already know that face, and figured that when she saw 10, he was actually 14, and thought he *was* 14.

Personal favorite theory is that Missy is the last incarnation of the Master. And the reason why season 13's Master was so unhinged was because he knew what was comming. He didn't know how or when, but he knew he would become Missy eventually.

I’ve been saying this since 13 regenerated into 14. I’m glad y’all made a video on it. It just made since that she meant 14 when she first met 10

haven't seen the video yet so idk if this is one of them but judging on the thumbnail i assume it is: ever since Tennant was announced as the 14th Doctor, i always had in mind that when River said "Your eyes... I've never seen you this young" was because she thought that he was the 14th, and she had never met him in his 10th incarnation before. it would make sense. but at the same time, it wouldn't, because of all the extended media that show River Song meeting every single incarnation of the Doctor.

My own theory is that the Hartnell and Troughton Doctors remembered being the Timeless Child, but their memories were excised/blocked as part of the sentence that the Time Lords subjected them to at the end of “The War Games”.

It's already stated canon from the original series that the Chameleon circuit is no longer broken, The Doctor is just fond/nostalgic of the Police Box look at this point.

A personal theory I've had since long before Clara went running up and down The Doctor's timeline, (Tom Baker era?) answers how The Doctor always seems to know a little bit more (I think) than perhaps they should: The Doctors memories are influenced by both directions of time, the past and the future. This would be a subconscious thing, thus he doesn't always know (Or does he? The Doctor Lies.) for sure, and why they're sometimes a little confused (especially after regeneration). As always thank you so very much for the videos. (I ❤The Riversong and 14 crossover idea!) While thinking about this, I was struck by a list I'd love to see: Show theories that aren't "cannon" but (at least some) fans wish they were! Like Riversong having a brother, who visited their grandad (Rory's Dad - As we saw in a storyboard, but wasn't filmed). And Dr. Moon (Colin Salmon) being "The Final Doctor" as Steven Moffat has been quoted about.

I have a theory that the 9th, 10th, and 11th Doctors are faces of Time Lords who died in the Time War, to pay tribute to those he couldn't save. After Day of the Doctor, then, he remembers someone he could save and the 12th Doctor comes about.

As far as the Chameleon Cricut goes, the TARDIS scans the entire planet in the nanosecond before materialization, picks the best camouflage for said planet and then discards that and becomes the Police Box. Because she wants to be that.

River has already had more adventures with the 10th Doctor in Big Finish, set post library for 10, which also makes that line in the library story make sense.

I absolutely adore the theory regarding River! We'll see what these specials brings, but I'm already taking this for my head canon 🙈 Same with Sarah Jane Smith!

River also had an interaction with the 13th Doctor in The Ruby’s Curse Novel, although I’m not sure when exactly it occurs in her timeline

Re: 10 - It makes sense that Clara would be the diner 11 and Co go to. She saw the Doctor’s whole life in Name of the Doctor, plus it’s the adventure that puts 11 on the path to meeting her, so Future Clara would want to ensure that moment happens and would enjoy being the facilitator

I'm not sure the 7 A theory makes sense. The doctor's behaviour in The Snowman seems to suggest that he's only just lost Amy and Rory and is incredibly depressed about it

Loved this! Really interesting video and I would love to see a river and fourteenth doctor story happen! 😊😊

I think the regenerations changed when the Sisterhood of the Karn made him choose between death and the forced regeneration of the Eighth Doctor into the War Doctor. It's the first time we see that kind of regeneration and fully see it when The War Doctor turns into the 9th Doctor.

Maybe it was the Sisterhood of Karn's elixir that permanently changes his regenerations to a powerful explosion since he wanted to be a warrior instead of a doctor.

The reason why the NewWho regenerations look the way they do is not just better budget. It's because 9th Doctor regenerated like that because of the Time Vortex damaging his body (which had the same visual effect). When the Master then regenerated, the production team needed to show that what is happening is a regeneration without confusing the audience. So they used the same effect as before. When they then used it for the fake-out meta-regeneration to again make clear to the audience what is happening, it just kind of stuck and became lore. Also, the theory about weaponizing the regenerations would require you to ignore the retcon from Twice Upon a Time and Timeless Children.

Either the Doctor is a sentimental old time lord and just secretly loves the blue phone box look, or the TARDIS is a stubborn box that refuses to change. Equally likely scenarios

I assumed the diner Clara was supposed to be the same one from Impossible Astronaut. It looked the same, The Doctor points out that it's the same and Clara is all over The Doctors timeline, saving him.

*the perceived problem with the TARDIS chameleon circuit is actually very simple...when fully engaged in chameleon mode it tends to crawl off as an actual lizard would be inclined to do when left alone where as a police call box is less likely to do so*

I think the TARDIS just *likes* staying in the form of a police box. When you get a great outfit, you want to stick with that base look, making little alterations along the way... why wouldn't a sentient space/time traveler want to do the same? 😊❤❤😉

My fan theory on the fiery regenerations is because Rose looked into the TARDIS became the Bad Wolf and The Doctor in kissing her took all that energy into himself and that is the residual TARDIS energy flowing out of him not causing him to regenerate but because of the regeneration trauma that he or she undergoes. Not all Timelords regenerate that way.

Of course Clara has been watching over the Doctor before they met. She literally scattered herself across the Doctor's time stream to protect him from the great intelligence. The Doctor's regenerations started getting explosive after he forced his regeneration into the the 8th. They've shown a steady growth, even going so far as to deliberately make the 8ths regeneration smaller than the 9ths in the 50th special. Even the General's regeneration is just a mild inconvenience and is treated more like a slip and fall than a 'he's gonna blow'. River is not a reliable benchmark either as she is unique, being neither a timelord or having contact with timelords to be 'modified' even though she has a regeneration on par with the 9ths.

As for the River Song theory, I like that idea (don't necessarily need to see it on screen, but as an idea its nice) and I have a theory I like to add to that is the fact that Fourteen may have lied to River and hid the fact that he's not Ten from her.

Ok the whole River meeting 14th literally blow my mind and fill my heart with hope that this will became canon, plsss Russel T remember this i beg of you 🙏

Oof the idea that The Doctor had already lost the Ponds and goes back to get more time with them is legit making me cry.

You forgot. River met Post-Journeys End 10 before this in Big Finish

On the note of the exterior, I always assumed that Tardises operated somewhat like Transformers, as in taking a sample from an existing, disguise-worthy object and then store it in their data banks. From that on, basically every time the police box changes a bit, it just means that said scan/data is deteriorating or getting corrupted and the ship is just trying to patch it up from memory. Think of it as, trying to retouch a vintage photograph with AI. It doesn't exactly know what to do, but it's trying nonetheless.

Well, of course River met 14, and she didn't know it was 14 (thought he was 10). 14's photo is in her journal.

the chameleon circuit as micky asked we dont see police boxes any more so dont people notice? well if the chameleon circuit also works with a perception filter that would explain it ( to be honest i got the idea from douglas adams he called it "somebody elses problem" field )

To add to the river song theory, she only meets the 10th at her end, but she already has a picture of him in her?

I like how matt smiths tardis is bigger than the others because when his doctor went to his own grave the tardis was huge so i thought that his tardis being slightly more bulky was just the beginning of that but i think jodies is smaller so maybe not but i thought it was cool

I don't look at theories very much so I never heard of any of these, but I did think of the Regeneration theory on my own, it makes a lot of sense for them to turn it into a weapon during the war, they usually lost consciousness during regeneration which would allow them to be captured by the Daleks and used give them the power of regeneration. Destroying the Daleks when regenerating would stop that from happening.

The BBC web short "The Night of the Doctor" in which the 8th Doctor regenerates at the beginning of the Time War with help from the Sisterhood of Karn apparently intended to justify the difference in his regenerations in modern series as distinct from the classic era, but that doesn't explain other Time Lords regenerating in the same way in modern shows. Perhaps the theory presented in your list occurred in combination with this info -- the Doctor (who had become a warrior) and the Sisterhood might have supported spreading the weaponizable form.

All these theories sound great especially the one about River and 14 meeting and about the TARDIS's chameleon arc. Keep up the great videos 👍

With characters in mixed media, I fall back to what a Paramount rep said at a Star Trek convention decades ago about novels, comics, etc. being "canon". He said, "If it's not on-screen, it's NOT canon...". I can live with that in Doctor Who, as well (saves me brain cells)... I see that early penlight as the prototype Sonic Screwdriver, or using it implants the idea in his head to create his own "multi-tool"... works for me... ;-)

Disagreement on the Chameleon circuit theory. The doctor originally said it was broken because it refused to be anything other than a police box. He/she still does not grasp the obvious. Since we now know canonically that not only is the type 40 capsule intelligent but actually HAS a female personality AND that she considers herself to have stolen a Time Lord, not the other way around as the Doctor commonly claims. With this in mind it is completely reasonable to assume that the TARDIS has chosen a form and that is what she looks like. I personally suspect that the doctor could completely replace the circuit and it would change nothing. But if he politely ASKED her to change she might consider dressing up or doing a bit of CosPlay for a special occasion.

The chameleon circuit was fix by Colin baker’s doctor but having the circuit working upset some fans so after getting multiple letters from fans about it the circuit mysteriously stopped working again and never changed from the police box again

I still don't think we can conclusively say River has met [ what everyone is calling the ] 14th Doctor. Aside from the brevity of his existence, I still think the "younger than I've ever seen you" line was a throwaway that probably should be retconned now that we know she's met earlier versions. Not out of the realm of possibility, but I'm of the opinion it's highly unlikely.

I haven't got a copy of it on me, but I recall that in the novelisation of The King's Demons Terence Dudley wrote a lovely piece of prose about the Doctor thinking why the Tardis had retained the Police Box shape. I wish I could get a copy of it as I thought it really was quite special.

Comment 1) Clara Oswin Oswald stole my heart from the get-go, and she broke it when she died. It always hurts to see her die in season 9. I live for seasons 7 part 2, season 8, and most of season 9. I did hate the romance with Danny plotline, though. Admittedly, my hatred for that is mostly due to desiring her myself. Comment 2) I wouldn't be surprised if Jack manipulated Tosh and Owen. He lived a long time and his sense of morality was skewed due to that. Also, the 9 Doctor's manipulation of him didn't help matters either. Comment 3) From what little i know of The Corsair, due to reading the 13th Doctor comics, I rather liked her. I wonder if we'll see the swashbuckling version of her pop up at some time? Comment 4) River meeting the 14th Doctor... I do believe we may actually see that. I mean, she knew about Donna's fate. Something, the Doctor would keep to himself no matter what. It is the worst thing he was ever responsible for in his mind. At least, as far as I know. As Donna is apparently returning for the 14th Doctor specials as well... I think there's a good chance River will meet the post Doctor-Donna version of Donna Noble who would then let slip abour River Song knowing her horrible fate. Just as Amy did with River prior to understanding the rules of River's time traveling lifestyle.

Superb!! Especially the River Song theory!! While doing a rewatch of Era 2 today, I remembered Cassandra, the oldest "pure" human alive, who was portrayed by none other than the actress who plays River Song! There are some neat parallels to be drawn there...

For the weaponised regeneration one I think it’s to keep the time lords safe during their regeneration, using the energy to ward of enemies while they change, a shown in the impossible astronaut, killing a time lord is possible if you kill them mid regeneration or you’ve got to wait until they use up all 12 regenerations

Personally my theory is that the more a time lord clings onto a regen the more violent the regeneration will be like 10 blowing up the tardis with his regen

River having meet 10/14 before husbands and forest of the dead makes sense

The Eighth Doctor is the key in the shift of artron energy 'shedding'. When Seven became Eight, it was essentially the same as previous ones. When Eight died, and the Sisterhood of Karn brought him (temporarily) back to life, they gave him elixir options to choose how... and into who, he would regenerate. He picked warrior to fight the Time War. As he goes from Eight to a Doctor of WAR, we get the now familiar artron energy explosive fountains. For those who try to point out about the 'prequel' Doctors of Chibnall et al. having the modern style... The Children of Time concept was a strategem of the Daleks in the Time War. Without elaboration, these earlier than Hartnell's Doctor incarnations had the same pattern as extrapolated from the War Doctor's physiognomy... How's THAT for a theory? A REGENERATION theory...

The River/14 theory actually explains a plot hole. She tries to sync diaries with 10 and asks about the Crash of the Byzantium. However, she'd know that was with 11 and that he didn't do diaries prior to 11. She MUST have thought 10 was actually a later incarnation, not an earlier one. More to the point she had to KNOW he used the same face twice of the Byzantium question would make no sense. Since it was a different incarnation than the one who'd been on the Byzantium then either he was older and the answer was YES or younger and the answer NO. If the latter, then again trying to do diaries makes no sense. If the former, then she'd already know the answer and the question doesn't help her at all. Therefore she must have met 14, done diaries and at least be aware it was a second go around with that face.

The second time we met River it felt like it’s not the second but forth of fifth time so I think there is a possibility she’s simply had other meetings with Ten in his later solo travels

Yes, pleeeeease!!! 😍 One more River - Tennant story!

Didn’t Clara say the 1st to specifically take that tarsus particular tardis when she got spread out through his timeline Also I reckon that from the moment 12 regenerated to 13 that they have been in a parallel universe hence the change to the master and the Ruth doctor existing and at the end of flux when they where in the void between universe coz of the flux wave they ended back in their proper universe

I’ve a theory that the real time lords are the Tardis, Gallifreyans are used by them but given the illusion of control.

A theory I came up with (and since learned that others have also thought of) is that "the Hybrid" was actually what we saw at the end of "The Timeless Children".

River has met Tenth also. It was post Library for him.

Another early appearance of the sonic screwdriver was in the novelization of "The Faceless Ones". The Doctor needs to open a crate, so author Terrence Dicks just retconned the device he used into being the sonic. (It still fits with its introduction in "Fury from the Deep", as Jamie wasn't there when the Doctor used it in "The Faceless Ones".)

Something about the lower quality, more practical effect-based style of Classic Who reasonates with me. Not sure why.

Looking at the title card I knew the exact scene

On weaponising the regenerations, Eleven literally destroyed a Dalek fleet using his regeneration and Ten ripped the interior of his Tardis apart. Makes me wonder if Time Lords can control how much energy they throw out when they’re on the verge of death as a defence mechanism. Aside Ten, who probably did it more out of frustration, especially as he didn’t destroy anything with his “false” regeneration.

There’s a theory that originally when Moffat wrote silence in the library Tennant hadn’t announced he was leaving and that there was a version of series 5 written that was completely different with him regenerating in the big bang story or a complete different episode all together. As there is a completely different version of series 5 where he doesn’t regenerate until the end.

River meeting the 14th Doctor would work great! Though if you read the novelization of Day Of The Doctor by Moffat, he shows her meeting an older Ten, which would explain why she knows his face in the library but has never seen him this young. I can't accept the Big Finish concept of her meeting even younger doctors though (and that's on Big finish, not Moffat), because of the impact that meeting a doctor who didn't know her had on her in the library. Like she said in day of the moon, one day she'll look into his eyes and he won't know who she is, and it will kill her. And it did. Meeting any earlier incarnation takes away from that, so I can't get behind it. As far as her confusion about Byzantium - I think it's similar to when Missy was telling Clara about some adventure the doctor had, where she didn't remember which face it was, since it's all just the doctor to her. And also when the Doctor told Bill about the Master, and wasn't sure which gender either of them were at the time. When you're a time traveler dealing with an immortal time traveler who changes faces, things get blurred. I like the concept of the diner being Clara's TARDIS. She wouldn't even need to hide, none of them knew her face yet, nor would 11 remember it under the circumstances.

For the theory about the TARDIS's Chameleon circit not being broken, I can't remember exactly but I remember seeing one clip (or maybe it was during my current rewatch of the series I can't remember) where The Doctor seemed to imply that he fixed the Chameleon circit ages ago but simply chooses to keep it as a Police Box because he likes the design? Could be wrong though.

I think its important to note the episodes where there Tardis materializes in a heavily populated place as a police box and no one seems to notice. Maybe the chameleon circuit still works a bit.

The chameleon circuit isn't broken, and that's canon. When The Doctor Donna explains how the circuit could be fixed, what most forget is that Donna and The Doctor's minds became like one. What Donna knew, The Doctor already knew.

My theory about the chameleon circuit is that it was stuck on police box by design ever since the time lords/ division decided to wipe the doctor's memories. . We saw the fugitive doctor's TARDIS was also a blue Police box but she's pre- Hartnell... possibly the last before Hartnell. My theory for this is that when the doctor's memory was wiped, they also had to wipe his TARDIS memory. Otherwise there'd be a record of all his/her travels. But wiping a TARDIS... that by default is connected to every moment and place in the universe...creates a break in a timeline which has to cause problems of some kind. . So basically the time lords set it so that it's maiden voyage post memory wipe is to mid 20th century Earth, UK, a place where a blue Police box would be expected. . And the amnesiac doctor is none the wiser that his wonky TARDIS navigation and chameleon circuit are that way all because of the cover up.

As for the weaponized regenerations, I took it as the regeneration cycle simply gets more and more difficult/energetic the more times it happens.