Simulations designed to feel indistinguishable from reality are probably closer to a century away than they are to a decade away I’d say your right about how far away we currently are from having the technology to make simulations indistinguishable from reality. The simulation technology we have today is in its infancy. The comparison between the simulation tech today and the simulation tech in the future would be like comparing a wheel from thousand years ago to an advanced car today. To conclude what I’m talking I’d say that by today’s standards simulations designed to be indistinguishable from reality are science fiction concept that can be regarded as a possible futuristic technology by those who make the optimistic bet on people being able to pull of the production of simulations designed to feel indistinguishable from reality in the future.