Nardole could've just gone there with Bill. But if the Doctor had remained bad we wouldn't have gotten the awesome Missy scene were she calls him out on his version of "good". So I'm conflicted.

This episode is actually in a very nice parallel to Hell Bent, which anyone who knows my views on the episode will know it's not a good place to be. It's set up by two very good, emotionally interesting episodes and the stakes are very high - and then it completely misses the point. Both had so much potential, and end…

I also think it may have to do with some interstellar space law thing like (although they haven't mentioned it in forever) the Shadow Proclamation.

At the end you mean? that was another room, I think. Or maybe I'm confused with the layout.

He was already a goner, the gal was protected and everyone else was isolated. Seems legit.

Well, he also get's to live longer before dying of old age now, I think.

I dunno, magic, I've always imagined it just "moves" the mechanism the way it's designed to move, like with straight-forward keys. But that's only one path for the mechanism to move in. And if it is electronic, the sonic can just calculate and/or enter the combination directly and proceed.

Maybe he gets resilience as he gets older (?)

She doesn't know.

But the point of this lock is that he would need to "think" the correct position of the wheele things and how is the sonic supposed to know that? I don't think it'd know in which face the numbers were painted to do it by itself by just the Doctor thinking "enter this code".

If at some point they have, at some point they've probably contradicted it, too. Like Four falling off an antenna and dying and Ten falling off a plane through a roof and surviving.

Presumably the lock only opens when the numbers are all in place, and he would have to know "how" he was sonicking the numbers, otherwise it's the same as trying out all the random combinations. We've just never seen him do it blind.

In his defense he was sleep-deprived and sick, god knows one can do stupid shit and forget the most basic things under those conditions.

Well she was suddenly faced with the fact that effectively a hero, who the Earth respects enough to name "President", is about to die, saving it, because he had to save her. Bill is the kind of person who acts impulsively and doesn't really think things through, and I can't see her as the kind of person who upon…

Her attitude in Knock Knock seemed to stem more from the fact she still wants to preserve some normalcy in her life (like, you know, the Pope not running in) than that she didn't want him there herself.

He has mentioned a couple times things that would kill him before he could regenerate. I guess being blown to bits must be included in those.

Actually that "open the second part with some low-key not-really-answering-the-cliffhanger-until-it-does scene" is very Moffat indeed.

Ah I'd forgotten about that, true. Great realisation of a dream.

While in Inversion the only thing that felt Moffat-y was the speech.

Well if they want consent and are asking for it they can very well f*ck with their minds all they want. As the Doctor says this episode, they are in control. They can always just clean up the biohazard and rule through fear if they get bored.