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Q: Construct a deductive argument that is valid but not sound. Then, construct a valid deductive argument that is sound. Be sure to put the argument in premise-conclusion form
A: What is your topic for argument?
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User: Construct a deductive argument that is valid but not sound. Then, construct a valid deductive argument that is sound. Be sure to put the argument in premise-conclusion form

Weegy: What is your topic for argument?
samn|Points 1867|

User: Construct a deductive argument that is valid but not sound. Then, construct a valid deductive argument that is sound. Be sure to put the argument in premise- conclusion form.





Weegy: In a deductive argument, the arguer claims that the conclusion must be true if, and only if, the premises are true. [ If the premises support the conclusion, we call it a valid argument: e.g., 1. Cats have whiskers. 2. Animals with whiskers are mammals. C. Cats are mammals. This is a deductive argument that is valid and has true premises . We call this a sound argument. A deductive argument can also have good logic even if the premises are false. This is still a valid argument, but it is not sound. Here is an example. 1. All birds can fly. 2. A penguin is a bird. C. A penguin can fly. This is a valid argument, but a penguin clearly cannot fly. The premise "all birds can fly" is false. If a deductive argument has bad or incorrect logic - the premises do not support the conclusion even if the premises are true, we call the argument invalid. E.g., 1. All humans are mammals. 2. My cat is a mammal. C. My cat is a human. 1. When I take a shower, I get wet. 2. I’m wet. C.I must have taken a shower. Both conclusions are false: my cat, clearly, is not a human, and I could have just fallen in the pool, or even stepped out in the rain. Both arguments commit the fallacy of affirming the consequent. These examples show that truth value of the premises is irrelevant for the validity of an argument and that validity relies solely on the logical form. However, as we have already pointed out, when a deductive argument has good logic but false premises, or true premises but bad logic, the argument is flawed and we should reject its conclusion. It is unsound. If a deductive argument is clear, valid and has all true premises, we have a sound argument and we have every reason to accept its conclusion. ]
Expert answered|thewolf010|Points 830|

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Asked 5/29/2012 7:55:26 PM
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