There isn't any time flowing in those clocks, Grumpy. If it's a quartz clock it employs a piezoelectric vibrating crystal. If it's a mechanical clock it employs sprogs and cogs. If it's an optical clock it employs light emitted from a hyperfine transition. Whatever it employs, it goes slower when its slower because the thing it employs goes slower. It's that simple. It varies by position in space. That's what Einstein said. He said that's why it curves. See the quotes in the OP here. You've got it back to front. A concentration of energy tied up as the matter of the Earth "conditions" the surrounding space. It alters it, the effect diminishing with distance. So light goes slower when its lower. So light veers like a car veers when it encounters mud at the side of the road. Einstein said a curvature of rays of light can only take place when the speed of light varies with position. See Ned Wright’s Deflection and Delay of Light and note this: "In a very real sense, the delay experienced by light passing a massive object is responsible for the deflection of the light”. LOL. Science fiction. Whooosh! There it goes! LOL! Good man. That's what Einstein said: "This space-time variability of the reciprocal relations of the standards of space and time, or, perhaps, the recognition of the fact that "empty space" in its physical relation is neither homogeneous nor isotropic, compelling us to describe its state by ten functions (the gravitation potentials gmn), has, I think, finally disposed of the view that space is physically empty." No it isn't. Virtual particles are field quanta. Like you divide the field up into little chunks and say each one is a virtual particle. They aren't short-lived real particles popping in and out of existence. See Matt Strassler article for more: http://profmattstrassler.com/articl...ysics-basics/virtual-particles-what-are-they/ It's not my theory, it's Einstein's theory, and it isn't crap.