While discussing Ruyong Wang’s unequivocal linearization of the Sagnac effect, I have come to realize there are 2 philosophical camps of relativists:

Covariant relativists have to disregard the generalization of the Sagnac effect, or don’t know about the problem.

Pure relativists are forced to embrace a reality which is wholly relative to the observer.

A QUEST FOR THE ORIGIN OF THE SAGNAC EFFECT - BHADRA, GHOSE, RAYCHAUDHURI - 2022

The important distinction here, is that the covariant relativist believes that Special and General Relativity can be reliably used to make “pre-dictions.” (dynamics)

The pure relativist has realized, and accepted, that the theories exclusivley make ad-hoc “post-dictions” (purely kinematic). Pure relativists have accepted the philosphical and religious leap that must be taken, of a universe which is wholly relative to the observer.

When one is forced to Lorentz transform a local Sagnac effect, and deny the direct relationship of the velocity of the moving fiber, with the velocity of c, one is forced to deny logic, and take a massive philosphical leap.

Generalized Sagnac Effect

A Landmark Experiment: The Linear Sagnac Test of Ruyong Wang

A Quest for the Origin of the Sagnac Effect

Sagnac Effect and Pure Geometry