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11 - From Quantum Physics to Ethics: Grete Hermann on Heisenberg’s Cut

Published online by Cambridge University Press:  02 July 2025

Patrick Charbonneau
Affiliation:
Duke University, North Carolina
Margriet van der Heijden
Affiliation:
Eindhoven University of Technology
Daniela Monaldi
Affiliation:
York University, Toronto
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Summary

In recent years, Grete Hermann (1901–1984) has been rediscovered as a principal figure in the history and philosophy of quantum physics. In particular, her criticism of Johann von Neumann’s so-called “no hidden variables” proof is a focal point of interest. Did she really find a mistake in this proof? We argue that the whole debate is misleading. It fits too well with the image of a forgotten woman who disproved a result of a mathematical genius, but it is neither historically nor systematically justified. Despite Hermann’s challenging thoughts on quantum physics, her impressive and important achievements were in ethics and politics. We offer a new and broader reading of Hermann’s interpretation of quantum physics and try to build a bridge between her works on quantum physics and ethics. In doing so, we focus on her interpretation of Heisenberg’s cut as a methaphorical device to argue against Leonard Nelson’s theory of free will and for freedom and responsibility as cornerstones of any democratic society.

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Women in the History of Quantum Physics
Beyond <i>Knabenphysik</i>
, pp. 309 - 336
Publisher: Cambridge University Press
Print publication year: 2025

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