Will the multiverse change the scientific method?

Antony Flew

These are my last comments on Man Ho Chan’s article, which reviews and refutes recent attempts to make multiverse theories scientific. Here I’ll deal with those attempts that propose renouncing the scientific method to make the theories of the multiverse scientific. This group of proposals, the most radical, can be summarized as follows:

• Epistemological anarchy: Proposed by Feyerabend in 1988, it argues that science is an essentially anarchic enterprise: theoretical anarchism is more humanitarian and more likely to foster progress than its law-and-order alternatives. In other words: We had better give up applying the scientific method, lest we miss some pseudoscientific theory that could have been useful. 

Man Ho Chan comments this: It is doubtful that multiverse theories can make any real scientific advancement. In some versions of multiverse theories, they suggest that all that can happen happens. In other words, these versions can explain everything. If a theory can explain everything, it does not lead to any scientific advancement… Therefore, it seems that multiverse theories are passively driven by empirical findings or theoretical constructions rather than actively leading to any new scientific advancement.

Will the multiverse cause a change in the scientific paradigm?

Thomas Kuhn

I continue my comments on Man Ho Chan’s article, which reviews and refutes recent attempts to make multiverse theories scientific. In this post I’ll refer to those attempts that try to modify the current scientific paradigm to include the theories of the multiverse, so that they can be considered scientific. To do this, epistemological changes or scientific paradigm changes should be made.

According to Thomas Kuhn, there are five criteria that make it possible to evaluate the paradigmatic character of a theory:

1. Accuracy: Indicates whether the predictions of the theory agree with experimental data discovered after the theory is formulated. This criterion is similar to falsifiability in the Popper-style theory, and corresponds to what I have called in another post validation of the theory. It is clear that multiverse theories do not meet this criterion, since they do not make testable predictions.

Are the multiverse theories scientific?

Virgo galactic cumulus

In previous posts I have said that the theories of the multiverse (there are several, some of them contradictory to the others) are not scientific, because it’s not possible to prove them false, according to Karl Popper’s criterion: a theory is not scientific unless it can be proved false with an experiment.

A recent article by Man Ho Chan reviews and refutes various attempts to claim that multiverse theories are indeed scientific. Here I am going to speak about those that try to prove that the multiverse theories should be considered scientific without asking big changes to the current criteria. Carroll 2018 uses three main arguments to justify this: