General relativity is precisely accurate in everything it models. See four examples:
• …the rate change of Mercury's orbital ellipse orientation.
• …the bending of light in gravitational fields.
• …The universe’s general expansion (from a hot-dense phase)
•…GR’s success is limited in scope.1
The universe really did expand from a hot dense state.
• …Galaxies are diverging (“red shifted”) like dots on a balloon.
• …A “Cosmic Microwave Background Radiation” permeates space like a gas.
• …There is a lot of helium-4, and some deuterium, helium-3, lithium-7.
So? Couldn’t it simply be that… •…GR’s success is limited in scope.1
General relativity “breaks down” in quantum-sized settings insofar as its predictions may no longer apply; we need a theory of quantum-gravity to unify quantum mechanics and general relativity.
• Quantum influences may rub out predictions of General Relativity
By way of response, however… • …we ought to give General Relativity's predictions benefit of the doubt. • …independent lines of evidence for a singular beginning supplement General Relativity's prediction, amplifying the likelihood that it's prediction is accurate.