Our Universe appears to be expanding and cooling, having originated some 13.8 billion years ago in a hot Big Bang. However, it’s plausible that what we see from inside our Universe is simply the result of being inside a black hole that formed from some parent Universe. If the black holes that form in our cosmos give birth to baby Universes, perhaps we arose from the formation of a black hole ourselves.
No the idea is that we’ve already been crushed into the singularity and the big bang singularity is what happened to everything after. I believe the idea is that we now exist as a 3-D hologram on the event horizon of 4-D black hole.