Respected scientists have proposed a flock of theories to describe what might have happened before the birth of our familiar universe of space and time.
The concepts have fanciful names such as "the big bounce," "the multiverse," "the cyclic theory," "parallel worlds," even "soap bubbles." Some propose the existence of multiple universes. Others hold that there's one universe that recycles itself endlessly, rather as Buddhists believe. Judeo-Christian theologians may have difficulty accepting any of these notions.
Most of the hypotheses are variations on an older idea that the universe has no beginning and no end, contrary to the big-bang theory, which says that our universe originated at a specific point and will end sometime in the distant future.
Although divine creation makes an appearance, the Simulation Argument gets no mention at all.