Hopefully this isn't too open ended, but can you tell me some cool things about the multiverse? It was touched upon on Sam Harris' podcast (Podcast: Waking Up with Sam Harris, Episode: The Multiverse & You (& You & You & You...) and now I can't stop thinking about it. Sometimes I'm using my absolutely and atrociously malnourished knowledge of how things work on the grand scale to try and wrap my head around the concept, and sometimes I'm just conjuring up silly and novel ever-so-slightly-alternate realities. Your insights on either or both are much appreciated.