The idea is that if computers continue to become more and more powerful, then we'll run more and more simulations on them, including simulations of ourselves; and if we can simulate consciousness, as some suggest, the the statistical likelihood is that we are living in a simulation, because it the least computationally expensive assumption. Conversely, if we're not living in a simulation then either we will never be able to simulate consciousness or there will be some other factor that makes it an unpopular activity.
The idea is that if computers continue to become more and more powerful, then we'll run more and more simulations on them, including simulations of ourselves; and if we can simulate consciousness, as some suggest, the the statistical likelihood is that we are living in a simulation, because it the least computationally expensive assumption. Conversely, if we're not living in a simulation then either we will never be able to simulate consciousness or there will be some other factor that makes it an unpopular activity.