Tesla's 369: From Pseudoscience to the Mathematics Powering AI

This article debunks the famous misattributed Tesla quote about the numbers 3, 6, and 9, revealing the legitimate mathematical foundation beneath the pseudoscience: modulo 9 arithmetic and digital roots. While the mysticism is unfounded, the mathematical principles are real and verifiable by any mathematics student. The piece bridges to modern AI research, suggesting these ancient mathematical structures have unexpected relevance to how AI models achieve sudden generalization—a phenomenon known as 'grokking'—making historical mathematics surprisingly relevant to contemporary machine learning.