We can create simulations of history. They could be counterfactual, totally fictitious, or close to reality so far on film. World simulations are in their infancy in gaming. Quantum AI supercomputers would be more advanced. Today we can create simulations of people who have died via AI that look and sound like the original person. Its limited to the amount of energy a civilization could exploit. Ergo a species might be able to simulate travel dimensionally, and be at two places at the same time.