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Up LW's alley: Physicists find we’re not living in a computer simulation and the link to the actual paper.
Interesting paper. But, contrary to the popular summary in the first link, it really only shows that simulations of certain quantum phenomena are impossible using classical computers (specifically, using the Quantum Monte Carlo method). But this is not really surprising - one area where quantum computers show much promise is in simulating quantum systems that are too difficult to simulate classically.
So, if the authors are right, we might still be living in a computer simulation, but it would have to be one running on a quantum computer.