Modern Logical Arguments

Modern Logical Arguments - Modern Logical Arguments Strange...

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Modern Logical Arguments Strange as it may seem, the foundation of modern logic was created by the Stoic philosophers right after Aristotle. They reasoned that the Categorical Syllogism was really as follows: If Premise 1 is accepted and Premise 2 is accepted, then the Conclusion follows. They turned a Categorical argument into a Hypothetical (if. .. then). For example, "If it snows, then we go skiing. It snows. Therefore we go skiing." With all these arguments the premises are assumed to be 100% true. Notice that this is a logic of sentences not words as with the Categorical Arguments They also added "or" which are called Disjunctive Arguments. An example of a disjunctive argument is: " Either we go to the circus or the movies. We do not go to the movies. Therefore we go to the circus." The last kind was Conjunctive Arguments or "and". An example is: "Stock prices will rise and consumer spending will increase. Stock prices rise. Therefore consumer spending increases." This sort of logic is usually symbolized or put into short hand as follows:
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This note was uploaded on 09/18/2011 for the course PHIL 102 taught by Professor Howard during the Spring '11 term at College of Southern Nevada.

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Modern Logical Arguments - Modern Logical Arguments Strange...

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