 Assuming it exhibits nonseparability, does the Aharonov-Bohm effect involve some kind of holism? The states of the particles need not be entangled with each other. But the state of the field may be thought to be holistic, in so far as the electromagnetic properties of loops do not supervene on properties (such as electric and magnetic field strengths) at the points that make up those loops. Since these are classical fields, the Aharonov-Bohm effect may be taken to demonstrate holism as well as nonseparability even in classical physics. However, a loop may also be thought of as traced out by a curve composed by “stringing together” a set of curves that trace out smaller loops, and removing segments traversed by two such curves in opposite directions. In that case, in a simply-connected region, the holonomy properties of any loop will be determined by those of an arbitrary set of smaller loops that compose it in this way. But when spacetime is not simply connected, there are loops that cannot be decomposed in this way: e.g. the loop that encompasses “the hole” in space cannot be further decomposed.