The question I've always had is - what if the entire universe is not only unthinkably larger than the observable universe but also non-homogenous? In other wor

The question I've always had is - what if the entire universe is not only unthinkably larger than the observable universe but also non-homogenous? In other words, what if the part of the universe that lies in our past light cone is nothing at all like the rest of the universe? The CMB and other remnants of the Big Bang could simply be remnants of something that happened in a large enough swath of the universe to cover our observable universe but still only be a tiny part of the entire universe and not represent the actual beginning. The parable of the Blind Men and the Elephant on a cosmological scale, so to speak.