> It's just a theory. When theory doesn't match reality — we replace theory.

Sure.

But if you throw away the theory of relativity, you don't have any evidence that black holes exist in the first place — every observation of something that points to the concept of "a black hole" presupposes that relativity is close enough to correct for event horizons to be exactly as one-directional as time. (That't not a metaphor, literally).

If GR is not close enough to correct for the event horizon to be there, then black holes don't exist either, they are meaningless words.

Most actual researchers know there's a problem with GR specifically because of black holes' singularities, and at least one of GR and QM because of the EH — but nobody knows what to do about it as all the attempts to fix it either violate existing observations or have no testable consequences.

> Fractal theory is simple: Universe is a 3D fractal, which means that if we will zoom in or zoom out for long time, we will see similar structures again and again and again, for infinity.

Then it is false. The universe is not scale-invariant.

If anything, the opposite of your claim: at large scales even within the range we can sense, the "End of Greatness" scale is around 100 megaparsecs, at which point everything starts to look homogeneous and isotropic; conversely at the quantum scale, concepts of "position" and "momentum" cease to be independent. Electrons don't orbit their nucleus the way planets do, every measurement of position is random from the distribution of the corresponding "orbital".

There's nothing to even suggest what you say.

> Nope. Imagine that we are sitting at surface of a rubber balloon and it deflates. We also see lot of rubber balloons around us, which are doing the same. We will see that surfaces of all balloons are moving away from us, so you may think that this rubber Universe is expanding. Surfaces of larger balloons further away are moving away even faster that surfaces of smaller balloons near to us, so you may think that this rubber Universe is expanding with acceleration, but this is just an illusion. In reality, balloons are deflating, their centers are barely moving.

What do the balloons represent here? Because if it's space, and the more distant ones are bigger, you've just put a funny map onto an expanding spacetime.

> Yep, but why? Look, I'm trying to guess our location in outer Universe.

Meaningless.

> Our base space is very rigid, it able to withstand powerful forces without hitting it limits. Black holes are able to hit limits of the space, so I suspect that equally strong forces are holding our space, thus we are inside in a black hole. But where we are in the black hole? We don't see curvature of space, thus we are in a flat part of the black hole. Where this flat part can be? IMHO, we are near to center of black hole, in the north hemisphere.

Now I'm sure you're trolling.

These words do not seem to connect to anything tangible.

There is no testable interior of a black hole, so we cannot say if they "hit limits of space" or not — the singularity in the middle is a mathematical consequence of a divide-by-zero that no actual researcher in the field takes seriously, in part because the maths underpinning general relativity presupposes singularities never happen. (To be more precise, spacetime is presumed to be differentiable, and thus sufficiently small patches can be treated as if they were flat — singularities can never be treated this way).

Black holes get more curved, less flat as you get closer to where the maths says the singularity would be. Outside a black hole this can be directly observed, it was one of the initial tests of GR that meant it was ever taken seriously in the first place.

And "in the north hemisphere"? There's no universe-spanning magnetic field to give that meaning.