Creating simulations of the world can be a valuable way to test new ideas, predict the future, and broaden our understanding of a given topic. Presumably, the more similar the simulation is to the real world, the more transferable the knowledge generated in the simulation will be and, therefore, the more useful. As such, there is an incentive to create more advanced and representative simulations of the real world. Simultaneously, there are ethical and practical limitation to what can be done (...) in human and animal research, so creating simulated beings to stand in their place could be a way of advancing research while avoiding some of these issues. However, the value of representativeness implies that there will be an incentive to create simulated beings as similar to real-world humans as possible to better transfer the knowledge gained from that research. This raises important ethical questions related to how we ought to treat advanced simulated beings and consider if they might have autonomy and wellbeing concerns that ought to be respected. As such, the uncertainty and potential of this line of research should be carefully considered before the simulation begins. (shrink)