> entanglement makes no sense as an optimization. Of course, which is why the universe doesn’t typically calculate full entanglement; hence entanglement doesn’

> entanglement makes no sense as an optimization. Of course, which is why the universe doesn’t typically calculate full entanglement; hence entanglement doesn’t really show up on the macro scale. Only when you do experiments on a handful of particles, and come up with an observable that depends on their behavior (interferometry, etc), the simulation has to scramble to come up with a coherent history that agrees with your measurement, in a lazily evaluated way. The larger scale the experiments are on entangled particles, the harder the simulation has to work to make it all happen and make sense. :-) One could say that decoherence is the universe’s way of preventing us from stealing its compute power too much.