[Warning: Memetic hazard and philosophical trip. Also, probably incorrect. Talks about death and torture and robots.]
The universe is probably infinite, flat, uniform, and ergodic. This means not only that there are an infinity of copies of the Earth, all of them identical, all of them containing “a you” that’s reading this post written by “a me.” In fact, all possible distributions of matter happen somewhere an infinity of times.
The Many-Worlds Interpretation of Quantum Mechanics is probably correct. That means everything that “can happen” will, in “some universe.” This means all possible distributions of matter happen everywhere.
There’s a reasonable chance the process that spawned our universe was some form of Eternal or Chaotic Inflation, in which there’s a huge “field” whose local fluctuations spawn universes. In fact, due to the above, it’s likely that our universe repeats an infinite number of times.
It’s fun to think about the possibility that…