Astrophysical constraints on the simulation hypothesis for this Universe: why it

Franco Vazza argues that the simulation hypothesis for this Universe is nearly impossible on physical grounds, based on constraints linking information and energy and on known astrophysical limits. He examines three cases: simulating the entire visible Universe, simulating Earth only, and a low-resolution simulation of Earth compatible with high-energy neutrino observations. In all cases, the paper finds the energy or power required is either incompatible with physics or astronomically large, even at the lowest resolution. It concludes that only universes with very different physical properties could simulate this one, and that a simulation by a universe with the same properties is impossible regardless of future technology.