This idea is known as Eternal Inflation. Here is the first in a series of 4 lectures about it: https://www.youtube.com/watch?v=xUZeZD9sytc https://www.youtube.c

This idea is known as Eternal Inflation. Here is the first in a series of 4 lectures about it: https://www.youtube.com/watch?v=xUZeZD9sytc https://www.youtube.com/watch?v=xUZeZD9sytc The main problem with eternal inflation is it gets us attempting to make statements about regions outside what we can observe directly.