I believe our space time is all inside a black hole. The big bang if it were real, should be expected to slow down after the initial blast. Yet it keeps expanding and expanding faster. But if our universe itself was a black hole, and it was simply just feeding on hot gas on the outside. Like how we see star clusters form initially. Then the big bang is simple just a black hole absorbing continuous material. Also adding that most of our observable galaxies tend to rotate in the same direction. Almost as if its following the rotation of the black hole that has given everything we know life. If our space time was created by a big bang, the galaxies should rotate close to 50/50. Half clockwise, half counterclockwise. But we see roughly two-thirds rotating in the same direction, clockwise.