It’s the year 2100. You wake up alone in a small, windowless room. The only other thing in the room is a small ball. Maybe the room is located in your city, but maybe it’s inside that new spaceship everyone’s talking about. How can you tell?
According to modified general relativity equations, our universe may be inside a black hole, the black holes in our universe may contain other universes, and the black holes in those universes may contain other universes… I need a drink.
