It’s like saying we never directly detected quarks so we can’t talk about it. It doesn’t work this way !
There’s the quantum gravity loop theory that thinks about the universe before the Big Bang - that’s the theory of the big bounce. See Carlos Rovelli et alli
There’s the theory of the multiverse that is constructed by leading physicists. See Aurelien Barrau et alli
As for physics inside a black hole there’s again tons of physics on the subject. See Kip Thorne and Carlos Rovelli book “white holes” (that is on the exact topic of space quantification and how it could solve the singularity problem, for black holes and the Big Bang).
The thing is for simplicity physicists tend to call the visible universe “the universe” so it might have lead you to think that they actually think that nothing existed before “the universe”.
That’s not true. Same you can hear people say “the universe is 90 billions light years across” they talk about the visible universe. Everybody knows the actual universe is way bigger !
Well that’s just not really true is it !
It’s like saying we never directly detected quarks so we can’t talk about it. It doesn’t work this way !
There’s the quantum gravity loop theory that thinks about the universe before the Big Bang - that’s the theory of the big bounce. See Carlos Rovelli et alli
There’s the theory of the multiverse that is constructed by leading physicists. See Aurelien Barrau et alli
As for physics inside a black hole there’s again tons of physics on the subject. See Kip Thorne and Carlos Rovelli book “white holes” (that is on the exact topic of space quantification and how it could solve the singularity problem, for black holes and the Big Bang).
The thing is for simplicity physicists tend to call the visible universe “the universe” so it might have lead you to think that they actually think that nothing existed before “the universe”.
That’s not true. Same you can hear people say “the universe is 90 billions light years across” they talk about the visible universe. Everybody knows the actual universe is way bigger !
Anyway 🤗