Is a multiverse the answer to the question of why the universe is so finely tuned for life?
Is our universe absolutely unique, or only one of a nearly infinite number of universes (a meta-universe or “multiverse”1)? As we seek to observe our own universe, we can see only so far. Four different levels describe our own universe’s relationship with supposed other universes: • Level 1: Regions beyond our cosmic horizon. The speed of light limits our ability to see beyond a certain distance from earth, where light simply hasn’t had time to reach our telescopes. That makes it impossible to get information at those tremendous distances from us. • Level 2: Other supposed post-inflation bubbles (post inflation meaning after the supposed big bang inflationary period). This level is supposed to include “black hole babies”, baby universes, and various possibly interacting “branes. Branes (also sometimes called “membranes” or “p- branes”) are theoretical and postulated to consist of ordinary matter confined on a surface that is embedded in a static, higher dimensional spacetime environmen
