 It cannot be denied that general relativity proved a considerable stimulus to philosophical novelty. But then the question whether it particularly supported any one line of philosophical interpretation over another must take into account the fact that schools of interpretation in turn evolved to accommodate what were regarded as general relativity’s philosophically salient features. A classic instance is the assertion, to become a cornerstone of logical empiricism, that relativity theory had shown the untenability of any “philosophy of the synthetic a priori”, despite the fact that early works on relativity theory by both Hans Reichenbach and Rudolf Carnap were written from within that broad perspective. It will be seen that, however ideologically useful, the claim by no means follows from relativity theory although, as physicist Max von Laue noted in his early text on general relativity (1921: 42), “not every sentence of The Critique of Pure Reason” might still be held intact. What does follow from scrutiny of the various philosophical appropriations of general relativity is a consummate illustration that, due to the evolution and mutual interplay of physical, mathematical and philosophical understandings of a revolutionary physical theory, philosophical interpretations often are works in progress, extending over many years.