QM/QFT is radically simpler to simulate than classical mechanics. It's infinitely more expensive though in terms of pure CPU speed though. With classical mecha

QM/QFT is radically simpler to simulate than classical mechanics. It's infinitely more expensive though in terms of pure CPU speed though. With classical mechanics you need to timestep and integrate F=ma and all kinds of associated issues. In QFT you just generate all possible 4D configurations of all fields, assign a weight to each by a prescription, and estimate the ones you're interested in finding the probability for by adding together the weights, take their square, and normalize by the total sum of weights.