IF GRAVITY IS FUNDAMENTALLY REPUSIVE ...

... Then particles could be non-local gravitational sinks rather than sources with mass/energy seated in the voids of large-scale space (dark mass/energy?), in possible accord with Mach's Principle (the inspiration for general relativity) and Bell's Theorem. Gravity could appear attractive below the galactic supercluster scale. And it can be shown that,

electron mass/energy magnitude = (k^2(H/G)(e/c)^4)^1/3 (order of magnitude)

sub-proton (quark?) mass/energy magnitude = ((H/G)(h/c)^2)^1/3 (order of magnitude)

where H is derived in acceleration units; and e and h are derived.