nemo
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I just had to write a paper on non-Aristotelian logic.
Instead of attempting a summary, I'll just quote the mathematician Alonzo Church on the topic:
From: A Set of Postulates for the Foundation of Logic. Annals of Mathematics 33 (1932): 346-366
Instead of attempting a summary, I'll just quote the mathematician Alonzo Church on the topic:
We do not attach any character of uniqueness or absolute truth to any particular system of logic. The entities of formal logic are abstractions, invented because of their use in describing and systematizing facts of experience or observation, and their properties, determined in rough outline by this intended use, depend for their exact character on the arbitrary choice of the inventor. We may draw the analogy of a three dimensional geometry used in describing physical space, a case for which, we believe, the presence of such a situation is more commonly recognized. The entities of the geometry are clearly of abstract character, number as they do planes without thickness and points which cover no area in the plane, point sets containing an infinitude of points, lines of infinite length, and other things which cannot be reproduced in any physical experiment. Nevertheless the geometry can be applied to a physical space in such a way that an extremely useful correspondence is set up between the theorems of the geometry and observable facts about material bodies in space. In building the geometry, the proposed application to physical space serves as a rough guide in determining what properties the abstract entities shall have, but does not assign these properties completely. Consequently there may be, and actually are, more than one geometry whose use is feasible in describing physical space. Similarly, there exist, undoubtedly, more than one formal system whose use as a logic is feasibile, and of these systems one may be more pleasing or more convenient than another, but it cannot be said that one is right and the other is wrong.
From: A Set of Postulates for the Foundation of Logic. Annals of Mathematics 33 (1932): 346-366