The Multiverse Instead of God?: Four Philosophical Problems

The Multiverse vs. God- Introduction

A few weeks ago a skeptic asked me about my concerns with the multiverse as an explanation for the beginning and fine-tuning of the universe. He stated that he did not want a scientific critique, though, because he believes that the multiverse is outside the ability of science to test. He was more interested in my philosophical concerns. Four issues come to mind. None of them remove the possibility of a multiverse in a theistic world; however, two make the multiverse unpalatable in a naturalistic world, and the other two do remove it from possibility in a naturalistic world.

I will start by showing the power of the multiverse as an explanation, and at the same time, I will show how two of the issues make a naturalistic multiverse impossible as a naturalistic explanation (but do not necessarily rule it out). I will then describe the two issues that make the naturalistic multiverse even less desirable as an explanation. Finally, I will conclude by demonstrating how all these issues are consistently and comfortably resolved by a theistic worldview (with or without a multiverse).

Book Review: Who's Afraid of the Multiverse?

Introduction

As a Christian who is deeply interested in the sciences and what they bring to the table for defending the existence of God (and the truth of the Christian worldview, specifically), I have often encountered the idea that multiple worlds may exist, which seems to explain away the beginning of the universe and its designed features. When I heard that astrophysicist Jeff Zweerink (Apologetics 315 Interview) wrote an introduction booklet addressing that very challenge, it caught my attention. "Who's Afraid of the Multiverse?" (paperback, Kindle, Video) provides an introduction to the concept of the multiverse and what its implication is for arguments for God's existence. It is a short read at only 53 pages.

The Multiverse Landscape

Zweerink spends the first half of the book setting the stage for why discussions of a "multiverse" are even necessary and explaining what scientists mean by the term. Various observations of the universe have led scientists to believe that the universe experienced a period of expansion speeds exceeding the speed of light. Though the evidence is strong that this took place, exactly how and what caused it to begin and end are currently under investigation. One of the types of multiverse is a necessary implication of the fact of inflation, and one of the other types is a necessary implication of a particular model for the possible mechanism of inflation. Each progressive type becomes more speculative and enjoys less scientific evidence than the previous one.

The Cognitive Dissonance of Evil

The Problem of Evil and Suffering
In defending the truth of the Christian worldview, I often come across atheists who point to the supposed incompatibility of a loving God with the existence of evil and suffering. Many defenders of Christianity will move directly to explain to the atheist that without an eternal, unchanging standard, there is no objective morality, thus there is no objective good or evil. Without objective good or evil, their challenge is groundless. I agree with this answer, but only if the atheist is critiquing the Christian worldview from outside the Christian worldview; they are rather usually pointing to an internal inconsistency- that of a loving God and evil. Christians usually offer two answers to show that evil is, in fact, compatible with a loving God: that God does have purposes for allowing the evil, and man is free is disobey God which results in much evil and suffering. (Many do recognize that the challenge to Christianity has been overcome, but it is still offered in one form or another which does have much emotional and rhetorical power- more on this later.) However, this is only a portion of what our answer should be. We have merely shown that their claim of incompatibility is false, but what about challenges with atheism posed by evil and suffering?

Multiverse and Rationality

Something that I was thinking about the other day: some people are familiar with Alvin Plantinga's evolutionary argument against naturalism. Basically it states that because people believe false things that help survivability (such as "god", from the naturalist's perspective), evolution does not favor minds that recognize truth, but minds that recognize how to survive- if a belief just happens to be true, it is pure coincidence.

However, I was contemplating the multiverse (or multiple worlds) hypothesis, and it seems that this only compounds the problem. For those uninitiated, multiverse theory states that our universe is not the only universe there is. There are many other universes that do exist; however, our instruments cannot detect them because they are outside our universe. This theory comes in several flavors, but the one I am talking about is the one that is capable of explaining the fine-tuning and design in the universe, along with being an alternative to God as the "banger" that the cosmological argument requires. In order to account for the fine-tuning of the physical constants of the universe, some naturalists posit that there are an infinite (or near infinite) number of universes, each possessing different constants of physics. Ours just happens to be the one that is amenable to advanced life, and that is why we exist to observe the "fine-tuning".

Burden of Proof: A New Perspective?

I was thinking the other day about the burden of proof. It seems that no one wants to bare it. Many atheists claim that they don't shoulder the burden of proof because "you can't prove a negative". Some theists claim that they don't hold it because you can't prove something that is metaphysical (based on the assumption that only things that can be decisively measured can be "proven").