All the science stuff says the universe is expanding at an ever increasing rate. However, when reading about the possibilities of creating micro-universes (like in colliders), they say that those universes would appear to decay quickly from our outside perspective. Wouldn’t it make more sense that our universe is a micro-universe, which ought to be common for the same reason simulates universes are common, and that it’s decaying? What’s the difference between space expanding and the stuff within space all shrinking? Would the distinction even matter from an “inside” perspective?