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Particular statements are subcontraries . ‘Some man is just’ and ‘some man is not just’ cannot be false together
Given that traditional logicians did think the subcontraries have ‘existential import’, how do we resolve the apparent contradiction?
The case of subcontraries will be revealed to include an unjustified presupposition in the section concerning the modern square of opposition.
Again, I and O propositions are subcontrary , but not contrary or contradictory.
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