[tmsh]

Indeed, you only have to simulate what one person perceives and where they explore, etc. One person's conscious experience in theory should be able to be fully simulated with very little information relative to the complexity of matter etc. You just have to simulate the senses and model the universe around a person.

And why not do that as an experiment? If science/experimentation is a useful thing - why not have the main reality and lots of individual experiments?