There is no formal process for assessing the complexity of a theory or an interpretation, which leads to some interesting disagreements. Consider the Many-Worl

There is no formal process for assessing the complexity of a theory or an interpretation, which leads to some interesting disagreements. Consider the Many-Worlds Interpretation[0] of quantum mechanics. Its proponents say you need just a pretty small assumption (the Universe branches under certain conditions), and its critics say assumption is a huge deal, because it postulates an astronomically high (erm, cosmologically high) number of Universes that we can't observe. [0]: https://en.wikipedia.org/wiki/Many-worlds_interpretation https://en.wikipedia.org/wiki/Many-worlds_interpretation > Would it be reasonable to think of the "true model" of the universe as having infinite complexity, and we are trying to approximate it by adding features and interactions stepwise? Nobody knows. So far, we have very successful theories (general relativity, quantum field theory) that rely on a small number of equations with a small number of terms each. That gives hope that at least the laws that govern the Universe are not infinitely complex, but we cannot really know for sure.