" Parallel universes. Going back to our previous lessons which are the idea that space-time is flat, the number of possible particle configurations in multiple universes would be limited to 10^10^122 distinct possibilities, to be exact. So, with an infinite number of cosmic patches, the particle arrangements within them must repeat — infinitely many times over. This means there are infinitely many "parallel universes": Cosmic patches the same as ours that containing someone exactly like you, as well as patches that differ by just one particle's position, patches that differ by two particles' positions, and so on down to patches that are different from ours.
Last Updated : 2020-07-27 Read more