"Science begets knowledge, opinion ignorance.
The universe is not a matter for conclusion, it is a dictionary definition, it is everything that exists, so your complex reality becomes the universe or part of it and what you originally called the universe is now just a small part of the proper definition of Universe which includes, or is your complex reality. So any theories anybody has about the universe, if true, will have to be called the universe or become part of it.
I heartily commend this and hope all will take note of this excellent post. Cat