We cannot, as Marxists, allow science to proceed on the basis of the mysterious “action at a distance” implied in Newton’s Universal Law of Gravitation, which is nothing but the reintroduction into physical science of “the occult forces of the medieval scholastics”. “Action at a distance” means that an effect is described (the “pull” of gravity) for a particular body (say the Earth) having an effect on bodies (planets & stars for instance) that are at small or huge distances, without any intervening cause being alleged to have created the effect. This can only be termed “magic”, not science.