The missed Solvay opportunity: The famous Bohr-Einstein debate

The Bohr-Einstein debates of the 20th century represent the most famous intellectual conflict in the history of quantum mechanics. For three decades, Albert Einstein and Niels Bohr clashed over the completeness of quantum theory, the nature of reality, and the role of the observer. Neither convinced the other, and the debate ultimately ended in a pragmatic stalemate: the Copenhagen interpretation was adopted, and metaphysical questions were banished from physics. We apply the Category Error Detector (CED) to this historical debate to demonstrate that both physicists were committing a shared category error. They were attempting to force the invariant, deterministic structure of the Abstraction axis into the localized, probabilistic framework of the Contingency axis. They lacked the two-axis geometry required to see that they were both right, but describing different layers of the manifold. We argue that the Solvay Conferences were the exact historical inflection point where Structural Rationalism should have been born. The failure to do so resulted in a century of theoretical aporia, culminating in the current crisis of unfalsifiable models and particle phantoms.