i've written the following paper. what do you think of it?
full pdf here: https://files.catbox.moe/xaoyto.pdf
please give constructive criticism and don't just say "muh duh impossible"
this post was submitted on 14 Dec 2025
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This was my first thought on the matter. My understanding at least, is that the expansion of the universe is not really galaxies moving away from each other, but rather the space between the galaxies expanding (stretching). So if a mythril wire ran far across that space between galaxies, one of two things would most likely happen. Either the space would not expand almost like it's pinned in place by the existence of matter in that region, or the space would continue to expand and the mythril wire would appear to stretch with it, though actually it would be remaining entirely still, either way, the wire would not be unspooling at all.
The mithril wire would be put under tension by the expansion of space, the same as if it was laying on a stretching piece of rubber. Space would largely ignore it, because it's only sensitive to sizeable changes in the stress-energy tensor, and a segment of wire isn't that heavy.
Ok, let's use that example. So imagine you had a large square of rubber and you drew a coordinate plane on it. Then you drew a line segment between points (1,1) and (3,1). You can stretch the rubber until it's significantly longer, but your line is always exactly 2 units long, even if the rubber stretches.
The thing is, space is the geometry of the universe, it's what all the various particles in the universe are bound to. Matter isn't fixed to any point relative to other matter, it's fixed to a point in space. So if space bends, matter bends with it.
This is how/why orbits work. Gravity is mass warping spacetime. Fast objects like photons sail right on by most stars with their courses barely changed. But slower moving objects like planets are experiencing this local warping of spacetime for a longer period, so it affects them more over time. The thing to note though, is that the planets, and photons are both following newtons first law, they're traveling in a straight line unless acted upon by another object. The reason the planet orbits the star is that the star has warped space such that (given speed the planet is traveling) an orbit is a straight line.
Except matter IS fixed relative to other matter its how geasutres vaguely at all solids/liquids/most gasses works. The space the line is in would stretch, which would stretch the line, and then the line would contract again due to the bonds between its atoms producing tension. Of course since expansion is continuous eventually the line would snap, or if expansion suddenly became linear then the tension would reach an equilibrium and thus you couldn't extract energy from it.