science

If we ever develop a computer that is capable is simulating every aspect of the universe that we have ever observed, and we then make a simulation of our exact universe and run that simulation up the the point that ourselves in the simulation make the simulation of their own universe, the likelihood that we are in a simulation created by a higher order of ourselves as well is nearly 100%. And nearly 100% chance that they too are simulations. The depths of thess nested simulations would be potentially infinite, and only one could ever be the "real" world. So there is almost almost no chance that any of an infinite set is the "real" one.