The multiverse isn't a single theory; it is a "theory of theories." It is what remains when we follow the mathematics of our most successful physical models to their logical conclusions.
I. The Cosmological Foundation: Level I MultiverseThe Infinite Ergodic Universe
The Level I Multiverse is the most conservative version of the theory. It does not require new physics; it only requires that our current understanding of the universe's geometry is correct.
According to data from the Planck Satellite, the universe is "flat" with a very small margin of error. In General Relativity, a flat universe is spatially infinite. If space is infinite, then the matter distribution within it must be ergodic—meaning that on a large enough scale, the distribution of matter in one region is statistically representative of the whole.
The Bekenstein Bound and Information Density
