The epistemological analysis presented in this article shows that the foundations of Albert Einstein's theory of relativity, which he developed in the context of his special theory of relativity, are inconsistent with several experiments. This is not the case with the general theory of relativity, whose predictions coincide with the experiments without contradiction and whose experimental confirmations were celebrated as great scientific achievements. The latter made the physicists obviously blind to the contradictions of the foundations of the theory of relativity and led to an immunization against critical statements on the theory of relativity. As now criticism of relativistic physics is reflexively rejected as unjustified and ignorant by the majority of physicists, a critical... discussion of relativistic physics is practically not possible any more. But if this article is not ignored, a paradigm shift in physics will be unstoppable, just as the paradigm shift from the Ptolemaic cosmology to the Copernican cosmology of the 16th century.