  Newton's and Clarke's comments suggest that for them gravity was a law-governed phenomenon, i.e., a phenomenon in which objects influence each other at a distance according to the Newtonian law of gravity, and that this influence is due to some means which may be invisible and intangible and of a different nature from mechanism. On this conception of action at a distance, there seems to be no reason to exclude the possibility of action at a distance in the quantum realm even if that realm is holistic or the state of the relevant systems is non-separable. That is, action at a distance may be characterized as follows: