Dyson on why von Neumann's 1932 'Mathematical Foundations of Quantum Mechanics' left physicists unmoved

tak3sh8 · x · 2026-09-15

Freeman Dyson, in his essay "Birds and Frogs," reflected on why von Neumann's groundbreaking 1932 Mathematical Foundations of Quantum Mechanics — which gave quantum theory its rigorous Hilbert-space formulation — had little impact on mainstream physicists, summed up by the line: "For the physicists, Johnny did not exist."

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