‘Whether the Earth rotates once a day from west to east as [Galileo] taught, or the heavens revolve once a day from east to west as [the Catholic Church prior to 1820] believed, the observable phenomena will be exactly the same. This shows a defect in Newtonian dynamics, since an empirical science ought not to contain a metaphysical assumption that cannot be proved or disproved by observation.’--- Bertrand Russell: quoted in D. D. Sciama’s The Unity of the Universe, 1959, p.18.
Note carefully what Russell (1872-1970) has to admit; that man’s empirical science cannot tell us the order of the world for certain, for universal relativity makes it a metaphysical question, not one Isaac Newton or science can prove. You see the problem with whether the sun and stars revolve around the Earth as we see them do, and as the Bible says they do, or whether the Earth orbits the sun while revolving in a fixed-star universe as we are told they do, is one of relative movement in space. Only if we could position ourselves outside the universe and look in at it, would it be possible to see what cosmic bodies are fixed or move, and only then could we humans confirm the true order of its many movements. But because we are confined within our place in space and cannot go outside the universe to view inside it, no human science can confirm the true order of the universe for certain. In other words, the Galileo case was never about ‘Faith and Science’ as modern churchmen assert, but one of ‘Faith and Metaphysics.’ You see, the Lord God does know the order of His universe, and He revealed in Scripture the universe was created geocentric, with the sun and stars orbiting around the fixed Earth, an order made visible to the senses by Him to show us humans how He created the universe ‘for signs, and for seasons, and for days and years’ on Earth.
On the other hand, one can test if Einstein’s and Russell’s 50/50 relative ‘observable phenomena will be exactly the same’ as asserted above. This test can be done, and was shown how by Walter van der Kamp. If the test was confined to the Earth, sun and planets alone, then yes, double relativity can be shown to exist. But the universe includes the stars, and whereas Stellar Aberration is found in the geocentric aspect of the 50/50 exchange, it cannot be found in the 50/50 heliocentric exchange. So, as regards empirical science, Einstein and Russell’s 50/50 universe above is also falsified, so it is back to the Airy and M&M tests that show some scientific evidence for geocentrism.