You should look up Penrose’s work in conformal cyclic cosmology.
The short version is this: as the rarified universe becomes massless particles flying in all directions as space expands, it is basically the exact same conditions as the big bang. IE, when the universe fizzles out, from a different reference frame it’s still an infinite field of energy expanding out faster and faster.
Just cross out the “distance” part of interactions between particles, without humans or anything with mass really to observe or interact with anything, the relationships between photons are all that matters, and from that perspective it will be the same as the big-bang state. All that’s important to look at is the relationships between these particles, the angles between them and probability of them interacting with each other.
You should look up Penrose’s work in conformal cyclic cosmology.
The short version is this: as the rarified universe becomes massless particles flying in all directions as space expands, it is basically the exact same conditions as the big bang. IE, when the universe fizzles out, from a different reference frame it’s still an infinite field of energy expanding out faster and faster.
Just cross out the “distance” part of interactions between particles, without humans or anything with mass really to observe or interact with anything, the relationships between photons are all that matters, and from that perspective it will be the same as the big-bang state. All that’s important to look at is the relationships between these particles, the angles between them and probability of them interacting with each other.