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Using the Categorical Converter - 7 We continue by tracing our path from the PS under the A column to the SP under the I column. Moving from PS to SP follows the rule of Conversion. Since we encounter no symbol along the path, the token remains T (true). We might represent our inference thus far as: "All non-S is non-P" is true, thus (by obversion) "No non-S is P" is true, thus (by conversion) "No non-P is non-S" is true, thus (by obversion) "All P is S" is true, thus (by conversion) "Some S is P" is true.
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10 August 1996 For Educators Stephen Downes Guide to the Logical Fallacies Copyright © Stephen Downes, 1995-2001 stephen.downes@ualberta.ca |