Space

If I were to write this as hard science fiction, I would say that the countless possible multidimensional foldings of string theory could fill the role of genetic code. The black hole/big bang bottleneck (no longer a proper singularity) then creates a brief window in which energies are raised high enough that the folding specification can mutate, but the window is so brief that only a tiny fraction of folding possibilities are affected each time. Thus a child universe inherits the folding specification of a parent universe with slight mutations. Because this bottleneck has such incredibly high energy the vacuum energy of the mutations doesn't matter in the moment of mutation, allowing the mutations to be random.

Now, after this new universe has expanded (assuming it is viable with its mutations), the vacuum energy settles on some metastable point. In this metastable point, the vast majority of the folding specification doesn't really matter. Supersymmetry, if true, would be an example of such a latent part of the folding specification in our universe. Perhaps in our universe there is a fourth generation of particles that weighs as much as a small planet, we simply don't know, and so this fourth generation is free to mutate across our line of universes without affecting universe reproductive rate.

What this means is that the folding specification has "junk DNA" to work with. Universes aren't just doing some sort of gradient descent, sometimes a mutation will drop a previously latent structure down into the range where it actually affects how the universe functions.

Like suppose this fourth generation with particles the mass of planets had leptons that weighed as much as quarks. It wouldn't matter to us, but if a child universe happens to reduce the mass of fourth generation particles to be less than an up quark, suddenly out of nowhere you have fourth-generation protons that are lighter than first-generation ones but which need to interact with fouth-generation leptons that are much heavier than electrons for purposes of the weak nuclear force. This would usually have a negative effect on universe reproductive capability, but sometimes a positive one.

This assumes that the laws of physics differ between the inside and outside of a black hole

I mean, right away, doesn't this necessarily have to be true? Doesn't known physics simply break down in a singularity? Hell, most math breaks down once you introduce the number infinity into equations.

But, at the same time, black holes also evaporate into hawking radiation, stuff does come out of them. Which implies that something is going on inside them.

So with those two things combined, doesn't that mean the laws of physics "must* differ inside black holes?