Tegmark’s MUH is the hypothesis that our external physical reality is a mathematical structure.[3] That is, the physical universe is not merely described by mathematics, but is mathematics — specifically, a mathematical structure.
Look, I only heard about this concept, so maybe there’s more to it, but branches of mathematics are just a set of rules that we create.
Sometimes these rules can be applied to real systems, in our reality, and that helps to describe and understand the universe.
But it’s totally possible to come up with infinite nonsensical, useless mathematical systems that have nothing to do with the universe. The existence of these doesn’t mean that we have or could rewrite reality.
Look, I only heard about this concept, so maybe there’s more to it, but branches of mathematics are just a set of rules that we create.
Sometimes these rules can be applied to real systems, in our reality, and that helps to describe and understand the universe.
But it’s totally possible to come up with infinite nonsensical, useless mathematical systems that have nothing to do with the universe. The existence of these doesn’t mean that we have or could rewrite reality.