  One quick objection does not succeed. One might argue that since motion and rest are not relativistically invariant, neither could the contradictoriness in motion be part of the absolute character of reality. This may be so, but it does not prevent the concept being of use in the analysis of phenomena by means of frames: frame-relative inconsistencies would still be a (relational) part of the world. More importantly, the concept may find its natural home in QM rather than GR. It is well-known that there are deep incompatibilities between them as they now stand, but the jury is still out on how to resolve them, and it may well be that absolute motion is a part of the solution.