Holism as the empirical significance of symmetries

Not all symmetries are on a par. For instance, within Newtonian mechanics, we seem to have good grasp the empirical significance of boosts, by applying it subsystems. This is exemplified thought experiment known as Galileo's ship: inertial state motion ship immaterial how events unfold in cabin, but registered values relational quantities such distance and velocity relative shore. But gauge seems less clear. example, can transformations Yang-Mills theory---taken mere descriptive redundancy---exhibit similar boosts ship? question has been debated last fifteen years philosophy physics. I will argue that answer `yes', only for finite subset transformations, under special conditions. Under those conditions, mathematically identify with failure supervenience: Universe not uniquely determined intrinsic its isolated Empirical therefore encoded relations between subsystems stand apart from their states.