 The logic of conservation laws is such that the observation of some reactions entails the possibility of other unobserved ones. The learning-theoretic method rules out all reactions that are not entailed. It turns out that the conservation principles that this method would posit on the currently available evidence are  empirically equivalent  to the ones that physicists have introduced. Specifically, their predictions agree exactly with the conservation of charge, baryon number, muon number, tau number and Lepton number that is part of the Standard Model of particle physics.