1. let's start with agreeing on Light here

If you, as me, find light to have one invariant speed in a perfect vacuum, as observed from any frame of reference and in any frame of reference, be it a black hole or Earth, then we're on the level here

So assuming that light always have 'one speed' why would it describe that spacecraft as 'hanging' on the event horizon, as you look at it from outside the gravity well?

It can't be lights speed, right? We just agreed on it having one same speed, any and every-where. What do we have more? Well, we have the 'room' that light travels in. So does that room expands? From your perspective outside the gravity-well it shouldn't, because if it did it would be impossible to ever circumferent a Black holes 'event horizon' as the distance likely would become 'infinite' if so.

So your 'room' doesn't change. How about the 'room' our light signals 'see' then? Well, that's what we have left, isn't it? If light always have one same 'speed', and if your room doesn't change then there still is left to define the room light believes itself to 'propagate' in. In a way this is related, as I see it, to the gravitational redshift as that also is something that takes place due to 'space' getting 'warped' by gravity.

So, okay, light finds the room to 'stretch', but, how can the same 'room' be expressed two ways simultaneously? Well, what you see is not the same as what light sees, and the room you describe is not the room lights path describe. You might think of it as if there was a invincible 'interface' between what you see and what the other side see. That 'interface is this weird constant, lights invariant speed in a vacuum. We all 'translate' it into our reality, and normally we never notice that ours is 'different' in any way from anyone else's.

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You might also consider the opposite, that whatever you see is the only definition you ever will have about your own 'reality', including 'SpaceTime'. In that case the room observed from the lights 'propagation' from that event horizon is the correct description of the 'distance' taken by that light. Both ways are possible, but then you also will find that the distance you describe to that black hole from Earth will change as you get into its gravitational field, meaning that if that ship wanted to circumvent a black hole, close to the event horizon, it will give you a 'infinite room' to traverse, taking them much longer than you would expect. But here it becomes very murky as that should mean that from a further distance to the gravity well you would find yourself circumstancing that black hole faster than it will be possible for the spacecraft closer to it. And assuming this you will find that they never reach that Event horizon too.

Looking at it that way it's easy to see why it may be considered a 'time room pocket'. But it all builds on one thing, namely lights invariant speed in a vacuum. But this is all from the view point of you looking 'down' at that ship. Inside the ship time is as always and the circumvention of the event horizon will take a finite time fitting their calculations from outside the gravity-well, as I think of it now

It's such a weird subject this one.

My explanation is weirder than that though. Because, to me, it's all about 'interfaces'. And the 'interface' is light.

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And that's what Lorentz transformations are meant to do, to show how the 'other sides' room time relates to our personal. And that's what light does, binds all those 'room time geometries' together, giving us all a 'same' seamless 'reality'.

2. That one we need theories covering QM, and what under(?), for as I see it. From that perspective 'Time' cease to exist, and so does 'Space', and 'matter, and distance, and speeds. That place is where the Big Bang came form, the 'fault' containing the 'symmetry(s)' we observe, as expressing this place we live in.

There, as I see it, everything is 'one' and distance and our times arrow has no place. That's where it all exist without differentiating. And from the needs created here, in 'interactions' and 'equilibriums' existing we see 'forces' and 'fields'. I expect it to be most similar to a game, where 'rules' make a logical connection between different phenomena, presenting us with a sort of linearity inside our arrow, up to a point. Where that 'point' is constants take over. They define the 'rules' and 'causality chains' we see, including Electromagnetism and 'natural magnetism'. So before finding all constants there is we will have a hard time defining what the 'rules' are. And even after that the question is still open for what 'reality' really is

3. That one is about 'interactions', from inside a QM perspective. There we are close that other 'reality' as our linear 'arrow of time' lose its hold, becoming fuzzy. And if it is a game then what we call 'matter' can be anything on that particle plane. To me they might just be 'bubbles' in time, self consistent in our arrow as outcomes from interactions, as defined by the circumstances describing them. Well, as I sees it