To me, M-Theory (multiverses) harmonizes everything. For example, going back to my previous post about 2-dimensional "flatlanders," imagine if we poked our finger through their world and said "I am your God, and you shall have only one God." Later I poke 2 fingers into their world and say "It's still me, and there is only one God."
Suddenly, Mr. Flat is attending the church of the 1 finger, while Mrs. Flat goes to the church of 2 fingers. They relentlessly accuse the other of heretical beliefs. And then, just for fun, I poke my elbow into their world and say "my elbow and fingers are different, yet I am your one and only God." Suddenly there is a plethora of churches dedicated to explaining how there can be multiple and simultaneous existences of what appear to be many Gods, that are more definite, distinct and permanent than mere "manifestations" of one God -- yet they keep telling us they're the same God.
Religious wars break out. Inquisitions. Purges of heretical beliefs -- when everyone's basically describing the indescribable from their limited 2-dimensional perspective.
It could be the same for us. For example, in Christendom there has been a long-standing debate about whether we are "salvation" is predestined (completely no free will) or by works ("works" as an expression of free will). This debate orginated around 70 AD between the disciples Peter (proponent of works) and Paul (proponent of predestination). It's raged for 2000 years.
Multiverses explain that. For every choice you make, a copy of you exists in another universe where you didn't make that choice. At one level (the way reality was created) we can't avoid making the "right choice." And yet, at our individual level we experience very real free will. The sum of what is you made all the choices. But, each copy of you made a choice not to do something (perhaps wrong).
Recently I read a news article about scientists who had discovered "ripples" in space and time which originate from the big bang. They theorized that the initial "expansion" (first micro second) of the big bang exceeded the speed of light, creating distortions and bubbles in the universe which now remain as ripples in the "background" remnants of the big bang. That these bubbles are the other universes of the multiverse.
In other words, the multiverse shares the same big-bang origin. If you existed in one of those other universe, you'd see the same background remnants of the big bang, the same ripples/distortions. But, you wouldn't see this universe.
To me, that's mind-blowing. It seems to mean all the universes were created at the same time. Every universe to accomodate the choices you (and I) make were created at once.
That looks a lot like predestination. At the time of the big bang, every contingency was accounted for. Yet, at my individual existence -- I honestly made a choice to get out of bed, read this forum, and reply to your post. If someone tells me I didn't have the free will to do that, I'd say they are completely wrong. (But, a copy of me didn't get up. And that contingency was accommodated at the moment of the big bang.).
I think we're share a lot in common with the 2-dimensional flatlanders in terms of ignorance. At our level what I describe makes no sense. But, if we could put ourselves in the 4th dimension it would look so fundamental and easy to explain that we'd laugh at ourselves.
If the human race could ponder these things we might become more tolerant and humble.
(Finally, I want to say that my reference to God, Christianity and "creator" aren't meant to imply atheists, satanists, etc. are wrong. I was just using one belief system to illustrate what may be our extremely palsied understanding of something much larger.).
