Particle physics Quote by John D. Barrow

““The great unanswered question is whether there exists some undiscovered organizing principle which complements the known laws of Nature and dictates the overall evolution of the Universe. To be a true addition to what we know of Nature's laws, this principle would need to differ from any laws of gravitation and particle physics that might emerge in final form from some Theory of Everything. It would not be specific to Universes but would govern the evolution of any complex system. True, its general notions ought to be tailored in some way to the notions which characterize the specific things that go on in an evolving universe-the clustering of matter into stars and galaxies, the conversion of matter into radiation-but it would also need to govern the invisible ways in which the gravitational field of the Universe can change. Any such discovery would be profoundly interesting because the Universe appears to be far more orderly than we have any right to expect. It has a tiny entropy level compared with the largest value that we could conceive of it possessing if we were to reorganize the observed matter into other configurations. This implies that the entropy level at the beginning of the expansion of the Universe must have been staggeringly small, which implies that the initial conditions were very special indeed.””

— John D. Barrow