Asimov's 'The Last Question' is another good one that's in line: https://users.ece.cmu.edu/~gamvrosi/thelastq.html
As for the meta-time thing, functional decision theory [1] solves this. The application is particularly clean because your memories are erased between lives. There's no factor of 2 free lunch from temporal ordering.
Self-harm isn't moral or amoral, it just is. It's as moral or amoral as deciding if you should or shouldn't eat another animal (yes, this includes humans -- Donner party anyone?).
Life isn't black and white. Where I've landed with this thought experiment through my own meditations and readings is that the universe/reality is a recursive fractal of spectrums within spectrums.
And this is just scratching the surface of this stuff.
2. Who says the living of lives does not repeat over time? Your/our "next" life may start in 300 B.C.
Two things science knows barely something about: consciousness and the arrow of time. The self is only an illusion. Physics has lots of symmetry. Therefore, it would make sense if the universe was fair in the end. So the egg theory actually makes sense, more sense than anything else I've heard actually.
Re 2, yes and in 300 BC you're also expected to already have been 50% alive there.
Your egg can't explain consciousness or the arrow of time either. How is the person in egg limbo, the fetus being developed I mean, conscious? How does the egg limbo work at all? You're gonna need a big hand to wave the (meta-)physics of your little egg universe away.
Is self-harm ok? What could be considered good about it?
It is the hypothesis that all observers are actually manifestations of a single observer experiencing all of time, space, and every point of view. All world lines across spacetime are parts of one single line "like a huge tangled knot" traced out by the one observer.
Apocatastasis
The thesis goes something like: God is timeless. Time is necessary for change. In order to experience change, God creates universes that have time and descends into these lower states of existence. This gives rise to conscious beings - they’re literally small disconnected slices of God that descended to our state of existence. When you die, you “roll up” back into God taking your lived experience with you.
He was posthumously condemned in 1225 with an order for his books to be burned.
Edit: I wrote this response before you added that this was specific to the theology of John Scotus Eriugena.
Edit: Ah, yeah, this was just one thinker. Early catholic thought is diverse and fascinating. A lot of work went into reconciling religion (and the rest of society really) with the “science” of the time. There is a lot of fun exploratory work trying to reconcile Catholicism with other philosophies, only some of which became cannon. It’s one of the reasons why the scientific revolution was so jarring for all of society - it threw thousands of years of convergent philosophy across society into a paradigm shift when we were forced to abandon things like the 4 element theory.
A decision is a reaction from an observer: and it requires information and feedback. Is the thing that decides special? Is it the same thing as everyone else's?
If you can imagine it, does it make it more likely? Only time tells.
https://en.wikipedia.org/wiki/CP_violation
The main referenced wiki suggests that the missing positrons are inside protons, but recent a recent LHC experiment asserts CP-violation over baryons.
In this specific case experimental evidence shows it’s almost certainly not true. It was less the complications that killed it than objective observation.
The other side of the theory is the positron hidden in the proton. I assume a particle collider should be able to falsify this.
But it turns out antimatter isn’t supposed to actually move backwards in time but follows the same causality as everything else. It’s just that they represent their matter pairs configuration mathematically by reversing the time orientation. This isn’t super obvious but it’s very much different than going backwards in time literally. Sad!
Also even if we could, that would only describe the practically and theoretically observable universe, which doesn't rule out other places looking very different (on its own)
So, yea, it would have to be outside the observable universe in which that means we can do no empirical science on it therefore it not being real to us.
Dark matter represents far more of the universe than 'light' matter by volume if our physics is correct, so by that most galaxies are mostly dark matter by default. We have found a few very small ones that don't seem to be.
With this said dark matter still influences the curvature of space time so its not completely invisible. We could see a dark galaxy because it would alter the images of galaxies behind it with things like Einstein rings and crosses.
Is this a diagram of particles interacting or a single thread weaving through time? Pick your metaphor.
right up there with everything that will happen in the universe has already happened and it's just a matter of zooming out on the entire time dimension (some use that idea to explain "spooky action at a distance" quantum entanglement and the quantum eraser)
but I love how wikipedia even links the PBS Space Time about it
Edit: look up a chart for the standard model of particle physics.
Probably not, but apparently some of the math does work.
There's been some attempts to model all particles as micro black holes or stable quantum scale gravitational objects of some kind.