Optics of Thought: Logic and Vision in Müller, Helmholtz, and Frege

Notre Dame Journal of Formal Logic 41 (4):365-378 (2000)
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The historical antecedents of Frege's treatment of binocular vision in "The thought" were the physiological writings of Johannes Mueller, Hermann von Helmholtz, and Emil du Bois-Reymond. In their research on human vision, logic was assigned an unexpected role: it was to be the means by which knowledge of a world extended in three dimensions arises from stimuli that are at best two-dimensional. An examination of this literature yields a richer understanding of Frege's insistence that a proper epistemology requires us to recognize the existence and importance of nonsensible sources of knowledge



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David C. McCarty
Last affiliation: Indiana University, Bloomington

References found in this work

The Limits of our Knowledge of Nature.Emil du Bois-Reymond - 1874 - The Popular Science Monthly 5:17-32.

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