The Diki or the Bouncing Universe?

There are certain aspects of the early universe that are hard to explain in our current cosmology. There have been some attempts to answer these questions by saying, well, maybe the beginning wasn't the beginning. Maybe there was something before the beginning that created the conditions for the universe that exists today. Those lead to cyclic cosmologies where there was a previous universe that evolved into the Big Bang and then evolves into our current universe.