The idea is that we are inside (or on the surface of, same thing) a black hole whose event horizon encompasses the entire universe (observed and unobserved). Th

The idea is that we are inside (or on the surface of, same thing) a black hole whose event horizon encompasses the entire universe (observed and unobserved). The black holes we can see in our universe would then be children black holes (or great-great-grandchildren, who knows how far down the holographic rabbit hole we are).