Navier Stokes usage of a nonlinear fulcrum leads to the central issue that Riemann addressed in his seminal work on the foundations or hypotheses that underlie of geometry. That is the multi connected manifold of space being either discrete or continuous.
Gravity has the effect of a non linear "blow up" upon continuous positional space. As Leibniz warned about Newton's formulation of action at a distance, attraction across positional space was illusory or magical thinking. Quantum mechanics is discontinuous by its very framework as a probability wave. Probability must be discreetly measurable at its base.
The foregoing is the reason that Einstein's general relativity and quantum mechanics are immiscible.
