Rules for solving syllogistic arguments:
1. The term that the premises have in common is called the middle or common term and will never appear in the conclusion. The mathematical, LOGICAL nature of this reasoning should be stressed (cross out like terms).
2. In the conclusion, the subject term must come from one premise and the predicate term from the other premise. The conclusion cannot be identical to a premise.
3. The strength of a conclusion can be no greater than that of the weaker of the two premises. If one premise is universal (ALL, NO) and one is particular (SOME), the conclusion must be particular (SOME).
4. Only two affirmative premises can produce an affirmative conclusion. If one premise is negative, the conclusion will be negative. If both conclusions are negative, there will likely be NO conclusion.
Wednesday, May 20, 2009
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4 comments:
yeah! hi!guys ,
i have read this roles of solving syllogism argument and realise that there is nothing to worry about because every thing is open i mean black and white
please guys you must look on this notes am sure you will all agree that its no longer comlecated
once again thanks for notes sir.
Thanks again Dr.But her is only a simple question.How can one determine or how to arrange un arranged proposition in order to form a standard form categorical syllogism? second qn.In hypothetical syllogism if Propositions are not arranged(if hypotetical proposition does not begin with antecedent eg.The dird catches a worm if it is the early bird.The bird has not caught a worm.Therefore is not the early)Is it possible to find if it affirm or deny antecedent/concequent?or we should first rephrase it so as the antecedent can begun at the begging of the hypothetical proposition
Thanks for the final touches on Syllogism, they real healp in suming up the whole issue.
The point are cleare and straight forward,
Thanks so much, keep it up and God bless you.
in second rule of solving categorical syllogism you have said that the subject in the conclusion must come from the other premise,and the predicate from the other premise[i mean they must come from different premises],but my problem is in what premise to get the subject,and also in what premise to get the predicate?
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