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Ch.3
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p.26
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7726
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Aristotelian logic dealt with inferences about concepts, and there were also proposition inferences
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Full Idea:
Till the nineteenth century, it was a common view that Aristotelian logic could evaluate inferences whose validity was based on relations between concepts, while propositional logic could evaluate inferences based on relations between propositions.
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From:
Joan Weiner (Frege [1999], Ch.3)
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A reaction:
Venn diagrams relate closely to Aristotelian syllogisms, as each concept is represented by a circle, and shows relations between sets. Arrows seem needed to represent how to go from one proposition to another. Is one static, the other dynamic?
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