If these graphics are impressive today, imagine what will be possible in 500 years. We'll hit a point where simulated worlds will be indistinguishable from the

If these graphics are impressive today, imagine what will be possible in 500 years. We'll hit a point where simulated worlds will be indistinguishable from the real world. But then, if simulated worlds can reach this level of fidelity, that means we could be in such a world right now and there would be no way to know it.