# Fourth-generation relativity theory

A **Fourth-generation theory of relativity** would be a theory representing a further iteration of relativity beyond **Newtonian-Galialean theory** ("first generation"), **Einstein's Special Theory** ("second generation"), and **Einstein's General Theory** ("third generation").

The "**advanced GR**" described in these pages can be classed as a fourth-generation theory, as it introduces new concepts and principles, is structurally different from the previous iteration (no perfect reduction to SR), makes some identifiably different physical predictions, and incorporates different classes of behaviour (cosmological theory, quantum mechanics).

Other possible theories of Quantum Gravity may also count as being "fourth generation", if they can be shown to apply the principle of relativity more strongly, thoroughly and/or widely than third-generation theories.