Uncertainty in relativity

The opposite. Relativity starts with an assumption that all inertial reference frames are equal.

Sorry Bran I wasn’t entirely clear in my later years with incipient Alz’s. What I meant was, some more intuitively unlikely conclusions of relativity but nonetheless hanging together—such as clocks slowing and shrinking—interdependent as they are—suggest that a more general supposition, that eventually it will be demonstrated also that the constants assume the values that they do because they are interdependent—so none is “preferred” but a change in one would entail paradox or contradiction to the others. In other words, things are the way they are because they can’t be any other way

Of course as a typical blockhead my vocabulary in that realm isn’t nearly as extensive as yours but I’d be happy to elaborate on this interdependence as I see it perhaps to diminish any purely semantic aspects

Getting back to the privileged frame however, I don’t know whether it could be called by that term, but there’s one nagging frame Science isn’t sure about. After perusing relativity in my early life, in spite of the notion that all motion is relative there’s a very strong suggestion, not much discussed because I suppose it embarrasses the classic relativists, that there is a zero frame to which all motion can be referred

…...or as the Average Clod attempting to gain a foothold am I again wrong