The General "Principle" of Relativity In the most general sense, mechanics describe the interactions of space, time, energy and mass. Whether quantum or classical, all mechanics are subject to the principle of relativity with respect to any quantitative values defined for the ontological identities above. As a fundamental principle of all mechanics, the principle of relativity makes us aware of the necessity to qualify any statement about the physical nature of an event as a statement of relativistic measure. Even though it is implicitly or explicitly associated with all mechanics, the principle of relativity has for the most part been relegated to those consideration in physics in which motion plays a significant role in determining the mechanics of an event. This is apparent in the fact that quantum field theory is a background dependent theory unable to fully incorporate the general principle of relativity. As Einstein pointed out, the heuristic significance of the general principle of relativity is such that it is unbelievable that physics has proceeded for almost a century without it. To ask what would physics be without gravity is the question most commonly understood by this comment, and yet, that is not the question at all. What would physics be without gravity is not as significant or nonsensical a question in the study of particle physics where the effects of gravity is negligible. The question is 'what would physics be without the general "principle" of relativity'. It is the principle that has been ignored and only the general "theory" that has been considered as pertinent to the problem of unification. To appreciate the difference and the significance one must consider the "principle" of relativity as having a greater role in physics than defining a geometrical framework for the kinematics of systems in motion. That space, time and mass are quantitatively relative measures has become a working convention in physics. That space, time and mass are qualitatively relative ontologies has been implied since Einstein's first publication of E=mc^2. (which was actually and in my opinion more insightfully, m=E/c^2) I am curious to know if anyone has read any publications that consider a qualitative distinction of ontology a relativistic measure?