" The full story of the invention of the matrix form of quantum mechanics is far more complex than I can tell here, as it reveals a very dynamic, collective effort of a diverse community of theorists, in close interaction. Still, diverse as they were, the matrix mechanicians were by 1927 all framing the new theory in terms of the radically anti-realist philosophy that Bohr preached. The only holdouts were those who had come to quantum mechanics through the wave-particle duality, Einstein, de Broglie, and Schrödinger, who stubbornly remained realists. But once it was proved that Schrödinger’s wave mechanics was equivalent to Heisenberg’s matrix mechanics, the realists could be dismissed as stubbornly grasping on to old metaphysical fantasies, and ignored. "

― Lee Smolin , Einstein's Unfinished Revolution: The Search for What Lies Beyond the Quantum