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[[Universal affirmative]]s can only be partially converted. “All of Alma Cogan is dead, but only some of the class of dead people are Alma Cogan.” | [[Universal affirmative]]s can only be partially converted. “All of Alma Cogan is dead, but only some of the class of dead people are Alma Cogan.” | ||
As Monty Python had it, given the premise, “all fish live | As Monty Python had it, given the premise, “all fish live underwater” and “all mackerel are fish", one cannot conclude that “if you buy kippers it will not rain", or that “trout live in trees", much less that “I do not love you any more.” | ||
{{sa}} | {{sa}} | ||
*[[Correlation]] and [[causation]] | *[[Correlation]] and [[causation]] | ||
*[[cognitive dissonance]] | *[[cognitive dissonance]] |