This mathematical formulation is an abstraction of pages of equations that describe how a gravitational field forms around a mass, how that mass curves space and time, and how that curved space itself describes the motion of the mass.

Einstein understood that despite all the definitive answers science gives us, that all of the questions asked of science have been framed by human curiosity. So "objective science", even something as true and as purely abstract as 2+2=4, could possibly just be a property of our particular universe; one of many universes.

Is there a place that does not move?. Is there such a thing as an idée fixe?

Does pure abstraction exist?