> Once simulation technology is good enough, these simulated environments may even be occupied by simulated people, with simulated brains and bodies, who will u

> Once simulation technology is good enough, these simulated environments may even be occupied by simulated people, with simulated brains and bodies, who will undergo the whole process of birth, development, aging, and death. Like the nonplayer characters that one encounters in many video games, simulated people will be creatures of the simulation. Some worlds will be simulations set up for research or to make predictions about the future. For instance, a dating app (as seen on the TV series Black Mirror) could simulate many futures for a couple in order to see whether they are compatible. > A historian might study what would have happened if Hitler had chosen not to start a war with the Soviet Union. Scientists might simulate whole universes from the Big Bang onward, with small variations to study the range of outcomes: How often does life develop? How often is there intelligence? How often is there a galactic civilization? Uh huh.