...on evolution. You have pretty much sold me on the idea that evolution has happened over the last ~15b years. After my discussions with you I developed an interest and looked further in to the theory. Can you help me with understanding the theories presented regarding pre-planetary evolution? Namely the physical cosmology concerning particulate evolution, or the big bang. More specifically, how did the big bang eventuate? I've come across the big bounce theory - the collapse and reformation of a previous universe, and more recently the black hole theory - where our universe originated from a black hole that lies within another universe. Which is more widely accepted in the scientific community? How does the evidence suggest the beginnings of either of these theories? What created the original extremely hot and dense matter of the big bang? Or the original universe that collapsed and bounced? Or even the parallel universe that contains the black hole our universe originated from? Thanks again.