Arisototelian teleology at the level of physics hinged upon the uniqueness of the earth and spheres. Elements of one sort went up, others down based upon their relation to entities that were unique (earth, moon, the set of spheres). Each element therefore had ONE telos, the contrary of which was unnatural. Hidden premise in all of this is that the world as a whole is good, has a purpose or at least an ordered set of purposes. It is ONLY in view of such a presupposition that one could regard this or that motion of this or that element as telic/dystelic, i.e., consonant or dissonant with the goal of that part of nature. Modern science gets rid of this uniqueness. As in Galileo's discovery that the sun has blotches (no more quintessesnce), the planets have moons (no more tendency of all earthy things to move toward the center of the earth. Instead, at the elemental level/level of physics one has a diversity of tendencies to act and be a rest. There is no sense of heirarchy ...